Isolated human zinc metalloproteases, nucleic acids molecules encoding said enzymes, and uses thereof

ABSTRACT

The present invention provides amino acid sequences of peptides that are encoded by genes within the human genome, the enzyme peptides of the present invention. The present invention specifically provides isolated peptide and nucleic acid molecules, methods of identifying orthologs and paralogs of the enzyme peptides, and methods of identifying modulators of the enzyme peptides.

FIELD OF THE INVENTION

The present invention is in the field of enzyme proteins that are related to the metalloprotease enzyme subfamily, recombinant DNA molecules, and protein production. The present invention specifically provides novel peptides and proteins and nucleic acid molecules encoding such peptide and protein molecules, all of which are useful in the development of human therapeutics and diagnostic compositions and methods.

BACKGROUND OF THE INVENTION

Many human enzymes serve as targets for the action of pharmaceutically active compounds. Several classes of human enzymes that serve as such targets include helicase, steroid esterase and sulfatase, convertase, synthase, dehydrogenase, monoxygenase, transferase, kinase, glutanase, decarboxylase, isomerase and reductase. It is therefore important in developing new pharmaceutical compounds to identify target enzyme proteins that can be put into high-throughput screening formats. The present invention advances the state of the art by providing novel human drug target enzymes related to the metalloprotease subfamily.

Endothelin-Converting Enzymes

The novel human protein, and encoding gene, provided by the present invention is related to the family of metalloprotease enzymes (also referred to as the peptidase family M13, zinc metalloprotease family, and the neprilysin family) in general and shows a high degree of similarity to the endothelin-converting enzyme subfamily of metalloproteases. Furthermore, the protein of the present invention may be a novel isoform of the gene provided in Genbank gi7662200 (see the amino acid sequence alignment in FIG. 2).

Endothelin-coverting enzymes (ECE) are membrane-bound metalloproteases that catalyze the proteolytic activation of endothelins, which are potent vasoactive peptides. Endothelins are produced from biologically inactive intermediates known as big endothelins by ECE-catalyzed proteolytic processing. ECE function in secretory pathways as well as on the cell surface. ECE-1 and ECE-2 have been characterized. ECE-2 is structurally related to ECE-1, neural endopeptidase 24.11, and human Kell blood group protein. ECE-1 and ECE-2 are both inhibited by phosphoramidon. ECE-1 is most active at neutral pH, whereas an acidic pH is optimum for ECE-2. It is though that ECE-2 converts endogenously synthesized big endothelin-1 to mature endothelin-1 at the acidic environement of the trans-Golgi network (Emoto et al., J Biol Chem 1995 Jun 23;270(25):15262-8).

Metalloproteases

The metalloproteases may be one of the older classes of proteinases and are found in bacteria, fungi as well as in higher organisms. They differ widely in their sequences and their structures but the great majority of enzymes contain a zinc atom which is catalytically active. In some cases, zinc may be replaced by another metal such as cobalt or nickel without loss of the activity. Bacterial thermolysin has been well characterized and its crystallographic structure indicates that zinc is bound by two histidines and one glutamic acid. Many enzymes contain the sequence HEXXH, which provides two histidine ligands for the zinc whereas the third ligand is either a glutamic acid (thermolysin, neprilysin, alanyl aminopeptidase) or a histidine (astacin). Other families exhibit a distinct mode of binding of the Zn atom. The catalytic mechanism leads to the formation of a non covalent tetrahedral intermediate after the attack of a zinc-bound water molecule on the carbonyl group of the scissile bond. This intermediate is further decomposed by transfer of the glutamic acid proton to the leaving group.

Metalloproteases contain a catalytic zinc metal center which participates in the hydrolysis of the peptide backbone (reviewed in Power and Harper, in Protease Inhibitors, A. J. Barrett and G. Salversen (eds.) Elsevier, Amsterdam, 1986, p. 219). The active zinc center differentiates some of these proteases from calpains and trypsins whose activities are dependent upon the presence of calcium. Examples of metalloproteases include carboxypeptidase A, carboxypeptidase B, and thermolysin.

Metalloproteases have been isolated from a number of procaryotic and eucaryotic sources, e.g. Bacillus subtilis (McConn et al., 1964, J. Biol. Chem. 239:3706); Bacillus megaterium; Serratia (Miyata et al., 1971, Agr. Biol. Chem. 35:460); Clostridium bifermentans (MacFarlane et al., 1992, App. Environ. Microbiol. 58:1195-1200), Legionella pneumophila (Moffat et al., 1994, Infection and Immunity 62:751-3). In particular, acidic metalloproteases have been isolated from broad-banded copperhead venoms (Johnson and Ownby, 1993, Int. J. Biochem. 25:267-278), rattlesnake venoms (Chlou et al., 1992, Biochem. Biophys. Res. Commun. 187:389-396) and articular cartilage (Treadwell et al., 1986, Arch. Biochem. Biophys. 251:715-723). Neutral metalloproteases, specifically those having optimal activity at neutral pH have, for example, been isolated from Aspergillus sojae (Sekine, 1973, Agric. Biol. Chem. 37:1945-1952). Neutral metalloproteases obtained from Aspergillus have been classified into two groups, npI and npII (Sekine, 1972, Agric. Biol. Chem. 36:207-216). So far, success in obtaining amino acid sequence information from these fungal neutral metalloproteases has been limited. An npI metalloprotease isolated from Aspergillus oryzae has been cloned based on amino acid sequence presented in the literature (Tatsumi et al., 1991, Mol. Gen. Genet. 228:97-103). However, to date, no npI fungal metalloprotease has been cloned or sequenced. Alkaline metalloproteases, for example, have been isolated from Pseudomonas aeruginosa (Baumann et al., 1993, EMBO J 12:3357-3364) and the insect pathogen Xenorhabdus luminescens (Schmidt et al., 1998, Appl. Environ. Microbiol. 54:2793-2797).

Metalloproteases have been devided into several distinct families based primarily on activity and sturcture: 1) water nucleophile; water bound by single zinc ion ligated to two His (within the motif HEXXH) and Glu, His or Asp; 2) water nucleophile; water bound by single zinc ion ligated to His, Glu (within the motif HXXE) and His; 3) water nucleophile; water bound by single zinc ion ligated to His, Asp and His; 4) Water nucleophile; water bound by single zinc ion ligated to two His (within the motif HXXEH) and Glu and 5) water nucleophile; water bound by two zinc ions ligated by Lys, Asp, Asp, Asp, Glu.

Examples of members of the metalloproteinase family include, but are not limited to, membrane alanyl aminopeptidase (Homo sapiens), germinal peptidyl-dipeptidase A (Homo sapiens), thimet oligopeptidase (Rattus norvegicus), oligopeptidase F (Lactococcus lactis), mycolysin (Streptomyces cacaoi), immune inhibitor A (Bacillus thuringiensis), snapalysin (Streptomyces lividans), leishmanolysin (Leishmania major), microbial collagenase (Vibrio alginolyticus), microbial collagenase, class I (Clostridium perfringens), collagenase 1 (Homo sapiens), serralysin (Serratia marcescens), fragilysin (Bacteroides fragilis), gametolysin (Chlamydomonas reinhardtii), astacin (Astacus fluviatilis), adamalysin (Crotalus adamanteus), ADAM 10 (Bos taurus), neprilysin (Homo sapiens), carboxypeptidase A (Homo sapiens), carboxypeptidase E (Bos taurus), gamma-D-glutamyl-(L)-meso-diaminopimelate peptidase I (Bacillus sphaericus), vanY D-Ala-D-Ala carboxypeptidase (Enterococcus faecium), endolysin (bacteriophage A118), pitrilysin (Escherichia coli), mitochondrial processing peptidase (Saccharomyces cerevisiae), leucyl aminopeptidase (Bos taurus), aminopeptidase I (Saccharomyces cerevisiae), membrane dipeptidase (Homo sapiens), glutamate carboxypeptidase (Pseudomonas sp.), Gly-X carboxypeptidase (Saccharomyces cerevisiae), O-sialoglycoprotein endopeptidase (Pasteurella haemolytica), beta-lytic metalloendopeptidase (Achromobacter lyticus), methionyl aminopeptidase I (Escherichia coli), X-Pro aminopeptidase (Escherichia coli), X-His dipeptidase (Escherichia coli), IgA1-specific metalloendopeptidase (Streptococcus sanguis), tentoxilysin (Clostridium tetani), leucyl aminopeptidase (Vibrio proteolyticus), aminopeptidase (Streptomyces griseus), LAP aminopeptidase (Escherichia coli), aminopeptidase T (Thermus aquaticus), hyicolysin (Staphylococcus hyicus), carboxypeptidase Taq (Thermus aquaticus), anthrax lethal factor (Bacillus anthracis), penicillolysin (Penicillium citrinum), fungalysin (Aspergillus fumigatus), lysostaphin (Staphylococcus simulans), beta-aspartyl dipeptidase (Escherichia coli), carboxypeptidase Ss1 (Sulfolobus solfataricus), FtsH endopeptidase (Escherichia coli), glutamyl aminopeptidase (Lactococcus lactis), cytophagalysin (Cytophaga sp.), metalloendopeptidase (vaccinia virus), VanX D-Ala-D-Ala dipeptidase (Enterococcus faecium), Ste24p endopeptidase (Saccharomyces cerevisiae), dipeptidyl-peptidase III (Rattus norvegicus), S2P protease (Homo sapiens), sporulation factor SpoIVFB (Bacillus subtilis), and HYBD endopeptidase (Escherichia coli).

Metalloproteases have been found to have a number of uses. For example, there is strong evidence that a metalloprotease is involved in the in vivo proteolytic processing of the vasoconstrictor, endothelin-1. Rat metalloprotease has been found to be involved in peptide hormone processing. One important subfamily of the metalloproteases are the matrix metalloproteases.

A number of diseases are thought to be mediated by excess or undesired metalloprotease activity or by an imbalance in the ratio of the various members of the protease family of proteins. These include: a) osteoarthritis (Woessner, et al., J. Biol.Chem. 259(6), 3633, 1984; Phadke, et al., J. Rheumatol. 10, 852, 1983), b) rheumatoid arthritis (Mullins, et al., Biochim. Biophys. Acta 695, 117, 1983; Woolley, et al., Arthritis Rheum. 20, 1231, 1977; Gravallese, et al., Arthritis Rheum. 34, 1076, 1991), c) septic arthritis (Williams, et. al., Arthritis Rheum. 33, 533, 1990), d) tumor metastasis (Reich, et al., Cancer Res. 48, 3307, 1988, and Matrisian, et al., Proc. Nat'l. Acad. Sci., USA 83, 9413, 1986), e) periodontal diseases (Overall, et al., J. Periodontal Res. 22, 81, 1987), f) corneal ulceration (Burns, et al., Invest. Opthalmol. Vis. Sci. 30, 1569, 1989), g) proteinuria (Baricos, et al., Biochem. J. 254, 609, 1988), h) coronary thrombosis from atherosclerotic plaque rupture (Henney, et al., Proc. Nat'l. Acad. Sci., USA 88, 8154-8158, 1991), i) aneurysmal aortic disease (Vine, et al., Clin. Sci. 81, 233, 1991), j) birth control (Woessner, et al., Steroids 54, 491, 1989), k) dystrophobic epidermolysis bullosa (Kronberger, et al., J. Invest. Dermatol. 79, 208, 1982), and 1) degenerative cartilage loss following traumatic joint injury, m) conditions leading to inflammatory responses, osteopenias mediated by MMP activity, n) tempero mandibular joint disease, o) demyelating diseases of the nervous system (Chantry, et al., J. Neurochem. 50, 688, 1988).

Proteases and Cancer

Proteases are critical elements at several stages in the progression of metastatic cancer. In this process, the proteolytic degradation of structural protein in the basal membrane allows for expansion of a tumor in the primary site, evasion from this site as well as homing and invasion in distant, secondary sites. Also, tumor induced angiogenesis is required for tumor growth and is dependent on proteolytic tissue remodeling. Transfection experiments with various types of proteases have shown that the matrix metalloproteases play a dominant role in these processes in particular gelatinases A and B (MMP-2 and MMP-9, respectively). For an overview of this field see Mullins, et al., Biochim. Biophys. Acta 695, 177, 1983; Ray, et al., Eur. Respir. J. 7, 2062, 1994; Birkedal-Hansen, et al., Crit. Rev. Oral Biol. Med. 4, 197, 1993.

Furthermore, it was demonstrated that inhibition of degradation of extracellular matrix by the native matrix metalloprotease inhibitor TIMP-2 (a protein) arrests cancer growth (DeClerck, et al., Cancer Res. 52, 701, 1992) and that TIMP-2 inhibits tumor-induced angiogenesis in experimental systems (Moses, et al. Science 248, 1408, 1990). For a review, see DeClerck, et al., Ann. N. Y. Acad. Sci. 732, 222, 1994. It was further demonstrated that the synthetic matrix metalloprotease inhibitor batimastat when given intraperitoneally inhibits human colon tumor growth and spread in an orthotopic model in nude mice (Wang, et al. Cancer Res. 54, 4726, 1994) and prolongs the survival of mice bearing human ovarian carcinoma xenografts (Davies, et. al., Cancer Res. 53, 2087, 1993). The use of this and related compounds has been described in Brown, et al., WO-9321942 A2.

There are several patents and patent applications claiming the use of metalloprotease inhibitors for the retardation of metastatic cancer, promoting tumor regression, inhibiting cancer cell proliferation, slowing or preventing cartilage loss associated with osteoarthritis or for treatment of other diseases as noted above (e.g. Levy, et al., WO-9519965 A1; Beckett, et al., WO-9519956 A1; Beckett, et al., WO-9519957 A1; Beckett, et al., WO-9519961 A1; Brown, et al., WO-9321942 A2; Crimmin, et al., WO-9421625 A1; Dickens, et al., U.S. Pat. No. 4,599,361; Hughes, et al., U.S. Pat. No. 5,190,937; Broadhurst, et al., EP 574758 A1; Broadhurst, et al., EP 276436; and Myers, et al., EP 520573 A1.

Enzyme proteins, particularly members of the metalloprotease enzyme subfamily, are a major target for drug action and development. Accordingly, it is valuable to the field of pharmaceutical development to identify and characterize previously unknown members of this subfamily of enzyme proteins. The present invention advances the state of the art by providing previously unidentified human enzyme proteins, and the polynucleotides encoding them, that have homology to members of the metalloprotease enzyme subfamily. These novel compositions are useful in the diagnosis, prevention and treatment of biological processes associated with human diseases.

SUMMARY OF THE INVENTION

The present invention is based in part on the identification of amino acid sequences of human enzyme peptides and proteins that are related to the metalloprotease enzyme subfamily, as well as allelic variants and other mammalian orthologs thereof. These unique peptide sequences, and nucleic acid sequences that encode these peptides, can be used as models for the development of human therapeutic targets, aid in the identification of therapeutic proteins, and serve as targets for the development of human therapeutic agents that modulate enzyme activity in cells and tissues that express the enzyme. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus.

DESCRIPTION OF THE FIGURE SHEETS

FIG. 1 provides the nucleotide sequence of a cDNA molecule that encodes the enzyme protein of the present invention. (SEQ ID NO:1) In addition, structure and functional information is provided, such as ATG start, stop and tissue distribution, where available, that allows one to readily determine specific uses of inventions based on this molecular sequence. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus.

FIG. 2 provides the predicted amino acid sequence of the enzyme of the present invention. (SEQ ID NO:2) In addition structure and functional information such as protein family, function, and modification sites is provided where available, allowing one to readily determine specific uses of inventions based on this molecular sequence.

FIG. 3 provides genomic sequences that span the gene encoding the enzyme protein of the present invention. (SEQ ID NO:3) In addition structure and functional information, such as intron/exon structure, promoter location, etc., is provided where available, allowing one to readily determine specific uses of inventions based on this molecular sequence. As illustrated in FIG. 3, SNPs were identified at 4 different nucleotide positions.

DETAILED DESCRIPTION OF THE INVENTION

General Description

The present invention is based on the sequencing of the human genome. During the sequencing and assembly of the human genome, analysis of the sequence information revealed previously unidentified fragments of the human genome that encode peptides that share structural and/or sequence homology to protein/peptide/domains identified and characterized within the art as being a enzyme protein or part of a enzyme protein and are related to the metalloprotease enzyme subfamily. Utilizing these sequences, additional genomic sequences were assembled and transcript and/or cDNA sequences were isolated and characterized. Based on this analysis, the present invention provides amino acid sequences of human enzyme peptides and proteins that are related to the metalloprotease enzyme subfamily, nucleic acid sequences in the form of transcript sequences, cDNA sequences and/or genomic sequences that encode these enzyme peptides and proteins, nucleic acid variation (allelic information), tissue distribution of expression, and information about the closest art known protein/peptide/domain that has structural or sequence homology to the enzyme of the present invention.

In addition to being previously unknown, the peptides that are provided in the present invention are selected based on their ability to be used for the development of commercially important products and services. Specifically, the present peptides are selected based on homology and/or structural relatedness to known enzyme proteins of the metalloprotease enzyme subfamily and the expression pattern observed. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. The art has clearly established the commercial importance of members of this family of proteins and proteins that have expression patterns similar to that of the present gene. Some of the more specific features of the peptides of the present invention, and the uses thereof, are described herein, particularly in the Background of the Invention and in the annotation provided in the Figures, and/or are known within the art for each of the known metalloprotease family or subfamily of enzyme proteins.

Specific Embodiments

Peptide Molecules

The present invention provides nucleic acid sequences that encode protein molecules that have been identified as being members of the enzyme family of proteins and are related to the metalloprotease enzyme subfamily (protein sequences are provided in FIG. 2, transcript/cDNA sequences are provided in FIG. 1 and genomic sequences are provided in FIG. 3). The peptide sequences provided in FIG. 2, as well as the obvious variants described herein, particularly allelic variants as identified herein and using the information in FIG. 3, will be referred herein as the enzyme peptides of the present invention, enzyme peptides, or peptides/proteins of the present invention.

The present invention provides isolated peptide and protein molecules that consist of, consist essentially of, or comprise the amino acid sequences of the enzyme peptides disclosed in the FIG. 2, (encoded by the nucleic acid molecule shown in FIG. 1, transcript/cDNA or FIG. 3, genomic sequence), as well as all obvious variants of these peptides that are within the art to make and use. Some of these variants are described in detail below.

As used herein, a peptide is said to be “isolated” or “purified” when it is substantially free of cellular material or free of chemical precursors or other chemicals. The peptides of the present invention can be purified to homogeneity or other degrees of purity. The level of purification will be based on the intended use. The critical feature is that the preparation allows for the desired function of the peptide, even if in the presence of considerable amounts of other components (the features of an isolated nucleic acid molecule is discussed below).

In some uses, “substantially free of cellular material” includes preparations of the peptide having less than about 30% (by dry weight) other proteins (i.e., contaminating protein), less than about 20% other proteins, less than about 10% other proteins, or less than about 5% other proteins. When the peptide is recombinantly produced, it can also be substantially free of culture medium, i.e., culture medium represents less than about 20% of the volume of the protein preparation.

The language “substantially free of chemical precursors or other chemicals” includes preparations of the peptide in which it is separated from chemical precursors or other chemicals that are involved in its synthesis. In one embodiment, the language “substantially free of chemical precursors or other chemicals” includes preparations of the enzyme peptide having less than about 30% (by dry weight) chemical precursors or other chemicals, less than about 20% chemical precursors or other chemicals, less than about 10% chemical precursors or other chemicals, or less than about 5% chemical precursors or other chemicals.

The isolated enzyme peptide can be purified from cells that naturally express it, purified from cells that have been altered to express it (recombinant), or synthesized using known protein synthesis methods. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. For example, a nucleic acid molecule encoding the enzyme peptide is cloned into an expression vector, the expression vector introduced into a host cell and the protein expressed in the host cell. The protein can then be isolated from the cells by an appropriate purification scheme using standard protein purification techniques. Many of these techniques are described in detail below.

Accordingly, the present invention provides proteins that consist of the amino acid sequences provided in FIG. 2 (SEQ ID NO:2), for example, proteins encoded by the transcript/cDNA nucleic acid sequences shown in FIG. 1 (SEQ ID NO:1) and the genomic sequences provided in FIG. 3 (SEQ ID NO:3). The amino acid sequence of such a protein is provided in FIG. 2. A protein consists of an amino acid sequence when the amino acid sequence is the final amino acid sequence of the protein.

The present invention further provides proteins that consist essentially of the amino acid sequences provided in FIG. 2 (SEQ ID NO:2), for example, proteins encoded by the transcript/cDNA nucleic acid sequences shown in FIG. 1 (SEQ ID NO:1) and the genomic sequences provided in FIG. 3 (SEQ ID NO:3). A protein consists essentially of an amino acid sequence when such an amino acid sequence is present with only a few additional amino acid residues, for example from about 1 to about 100 or so additional residues, typically from 1 to about 20 additional residues in the final protein.

The present invention further provides proteins that comprise the amino acid sequences provided in FIG. 2 (SEQ ID NO:2), for example, proteins encoded by the transcript/cDNA nucleic acid sequences shown in FIG. 1 (SEQ ID NO:1) and the genomic sequences provided in FIG. 3 (SEQ ID NO:3). A protein comprises an amino acid sequence when the amino acid sequence is at least part of the final amino acid sequence of the protein. In such a fashion, the protein can be only the peptide or have additional amino acid molecules, such as amino acid residues (contiguous encoded sequence) that are naturally associated with it or heterologous amino acid residues/peptide sequences. Such a protein can have a few additional amino acid residues or can comprise several hundred or more additional amino acids. The preferred classes of proteins that are comprised of the enzyme peptides of the present invention are the naturally occurring mature proteins. A brief description of how various types of these proteins can be made/isolated is provided below.

The enzyme peptides of the present invention can be attached to heterologous sequences to form chimeric or fusion proteins. Such chimeric and fusion proteins comprise a enzyme peptide operatively linked to a heterologous protein having an amino acid sequence not substantially homologous to the enzyme peptide. “Operatively linked” indicates that the enzyme peptide and the heterologous protein are fused in-frame. The heterologous protein can be fused to the N-terminus or C-terminus of the enzyme peptide.

In some uses, the fusion protein does not affect the activity of the enzyme peptide per se. For example, the fusion protein can include, but is not limited to, enzymatic fusion proteins, for example beta-galactosidase fusions, yeast two-hybrid GAL fusions, poly-His fusions, MYC-tagged, HI-tagged and Ig fusions. Such fusion proteins, particularly poly-His fusions, can facilitate the purification of recombinant enzyme peptide. In certain host cells (e.g., mammalian host cells), expression and/or secretion of a protein can be increased by using a heterologous signal sequence.

A chimeric or fusion protein can be produced by standard recombinant DNA techniques. For example, DNA fragments coding for the different protein sequences are ligated together in-frame in accordance with conventional techniques. In another embodiment, the fusion gene can be synthesized by conventional techniques including automated DNA synthesizers. Alternatively, PCR amplification of gene fragments can be carried out using anchor primers which give rise to complementary overhangs between two consecutive gene fragments which can subsequently be annealed and re-amplified to generate a chimeric gene sequence (see Ausubel et al., Current Protocols in Molecular Biology, 1992). Moreover, many expression vectors are commercially available that already encode a fusion moiety (e.g., a GST protein). A enzyme peptide-encoding nucleic acid can be cloned into such an expression vector such that the fusion moiety is linked in-frame to the enzyme peptide.

As mentioned above, the present invention also provides and enables obvious variants of the amino acid sequence of the proteins of the present invention, such as naturally occurring mature forms of the peptide, allelic/sequence variants of the peptides, non-naturally occurring recombinantly derived variants of the peptides, and orthologs and paralogs of the peptides. Such variants can readily be generated using art-known techniques in the fields of recombinant nucleic acid technology and protein biochemistry. It is understood, however, that variants exclude any amino acid sequences disclosed prior to the invention.

Such variants can readily be identified/made using molecular techniques and the sequence information disclosed herein. Further, such variants can readily be distinguished from other peptides based on sequence and/or structural homology to the enzyme peptides of the present invention. The degree of homology/identity present will be based primarily on whether the peptide is a functional variant or non-functional variant, the amount of divergence present in the paralog family and the evolutionary distance between the orthologs.

To determine the percent identity of two amino acid sequences or two nucleic acid sequences, the sequences are aligned for optimal comparison purposes (e.g., gaps can be introduced in one or both of a first and a second amino acid or nucleic acid sequence for optimal alignment and non-homologous sequences can be disregarded for comparison purposes). In a preferred embodiment, at least 30%, 40%, 50%, 60%, 70%, 80%, or 90% or more of the length of a reference sequence is aligned for comparison purposes. The amino acid residues or nucleotides at corresponding amino acid positions or nucleotide positions are then compared. When a position in the first sequence is occupied by the same amino acid residue or nucleotide as the corresponding position in the second sequence, then the molecules are identical at that position (as used herein amino acid or nucleic acid “identity” is equivalent to amino acid or nucleic acid “homology”). The percent identity between the two sequences is a function of the number of identical positions shared by the sequences, taking into account the number of gaps, and the length of each gap, which need to be introduced for optimal alignment of the two sequences.

The comparison of sequences and determination of percent identity and similarity between two sequences can be accomplished using a mathematical algorithm. (Computational Molecular Biology, Lesk, A. M., ed., Oxford University Press, New York, 1988; Biocomputing: Informatics and Genome Projects, Smith, D. W., ed., Academic Press, New York, 1993; Computer Analysis of Sequence Data, Part 1, Griffin, A. M., and Griffin, H. G., eds., Humana Press, New Jersey, 1994; Sequence Analysis in Molecular Biology, von Heinje, G., Academic Press, 1987; and Sequence Analysis Primer, Gribskov, M. and Devereux, J., eds., M Stockton Press, New York, 1991). In a preferred embodiment, the percent identity between two amino acid sequences is determined using the Needleman and Wunsch (J. Mol. Biol. (48):444-453 (1970)) algorithm which has been incorporated into the GAP program in the GCG software package (available at http://www.gcg.com), using either a Blossom 62 matrix or a PAM250 matrix, and a gap weight of 16, 14, 12, 10, 8, 6, or 4 and a length weight of 1, 2, 3, 4, 5, or 6. In yet another preferred embodiment, the percent identity between two nucleotide sequences is determined using the GAP program in the GCG software package (Devereux, J., et al., Nucleic Acids Res. 12(1):387 (1984)) (available at http://www.gcg.com), using a NWSgapdna.CMP matrix and a gap weight of 40, 50, 60, 70, or 80 and a length weight of 1, 2, 3, 4, 5, or 6. In another embodiment, the percent identity between two amino acid or nucleotide sequences is determined using the algorithm of E. Myers and W. Miller (CABIOS, 4:11-17 (1989)) which has been incorporated into the ALIGN program (version 2.0), using a PAM120 weight residue table, a gap length penalty of 12 and a gap penalty of 4.

The nucleic acid and protein sequences of the present invention can further be used as a “query sequence” to perform a search against sequence databases to, for example, identify other family members or related sequences. Such searches can be performed using the NBLAST and XBLAST programs (version 2.0) of Altschul, et al. (J. Mol. Biol. 215:403-10 (1990)). BLAST nucleotide searches can be performed with the NBLAST program, score=100, wordlength=12 to obtain nucleotide sequences homologous to the nucleic acid molecules of the invention. BLAST protein searches can be performed with the XBLAST program, score=50, wordlength=3 to obtain amino acid sequences homologous to the proteins of the invention. To obtain gapped alignments for comparison purposes, Gapped BLAST can be utilized as described in Altschul et al. (Nucleic Acids Res. 25(17):3389-3402 (1997)). When utilizing BLAST and gapped BLAST programs, the default parameters of the respective programs (e.g., XBLAST and NBLAST) can be used.

Full-length pre-processed forms, as well as mature processed forms, of proteins that comprise one of the peptides of the present invention can readily be identified as having complete sequence identity to one of the enzyme peptides of the present invention as well as being encoded by the same genetic locus as the enzyme peptide provided herein. The gene encoding the novel enzyme of the present invention is located on a genome component that has been mapped to human chromosome 3 (as indicated in FIG. 3), which is supported by multiple lines of evidence, such as STS and BAC map data.

Allelic variants of a enzyme peptide can readily be identified as being a human protein having a high degree (significant) of sequence homology/identity to at least a portion of the enzyme peptide as well as being encoded by the same genetic locus as the enzyme peptide provided herein. Genetic locus can readily be determined based on the genomic information provided in FIG. 3, such as the genomic sequence mapped to the reference human. The gene encoding the novel enzyme of the present invention is located on a genome component that has been mapped to human chromosome 3 (as indicated in FIG. 3), which is supported by multiple lines of evidence, such as STS and BAC map data. As used herein, two proteins (or a region of the proteins) have significant homology when the amino acid sequences are typically at least about 70-80%, 80-90%, and more typically at least about 90-95% or more homologous. A significantly homologous amino acid sequence, according to the present invention, will be encoded by a nucleic acid sequence that will hybridize to a enzyme peptide encoding nucleic acid molecule under stringent conditions as more fully described below.

FIG. 3 provides information on SNPs that have been found in the gene encoding the enzyme of the present invention. SNPs were identified at 4 different nucleotide positions. Some of these SNPs that are located outside the ORF and in introns may affect gene transcription.

Paralogs of a enzyme peptide can readily be identified as having some degree of significant sequence homology/identity to at least a portion of the enzyme peptide, as being encoded by a gene from humans, and as having similar activity or function. Two proteins will typically be considered paralogs when the amino acid sequences are typically at least about 60% or greater, and more typically at least about 70% or greater homology through a given region or domain. Such paralogs will be encoded by a nucleic acid sequence that will hybridize to a enzyme peptide encoding nucleic acid molecule under moderate to stringent conditions as more fully described below.

Orthologs of a enzyme peptide can readily be identified as having some degree of significant sequence homology/identity to at least a portion of the enzyme peptide as well as being encoded by a gene from another organism. Preferred orthologs will be isolated from mammals, preferably primates, for the development of human therapeutic targets and agents. Such orthologs will be encoded by a nucleic acid sequence that will hybridize to a enzyme peptide encoding nucleic acid molecule under moderate to stringent conditions, as more fully described below, depending on the degree of relatedness of the two organisms yielding the proteins.

Non-naturally occurring variants of the enzyme peptides of the present invention can readily be generated using recombinant techniques. Such variants include, but are not limited to deletions, additions and substitutions in the amino acid sequence of the enzyme peptide. For example, one class of substitutions are conserved amino acid substitution. Such substitutions are those that substitute a given amino acid in a enzyme peptide by another amino acid of like characteristics. Typically seen as conservative substitutions are the replacements, one for another, among the aliphatic amino acids Ala, Val, Leu, and Ile; interchange of the hydroxyl residues Ser and Thr; exchange of the acidic residues Asp and Glu; substitution between the amide residues Asn and Gln; exchange of the basic residues Lys and Arg; and replacements among the aromatic residues Phe and Tyr. Guidance concerning which amino acid changes are likely to be phenotypically silent are found in Bowie et al., Science 247:1306-1310 (1990).

Variant enzyme peptides can be fully functional or can lack function in one or more activities, e.g. ability to bind substrate, ability to phosphorylate substrate, ability to mediate signaling, etc. Fully functional variants typically contain only conservative variation or variation in non-critical residues or in non-critical regions. FIG. 2 provides the result of protein analysis and can be used to identify critical domains/regions. Functional variants can also contain substitution of similar amino acids that result in no change or an insignificant change in function. Alternatively, such substitutions may positively or negatively affect function to some degree.

Non-functional variants typically contain one or more non-conservative amino acid substitutions, deletions, insertions, inversions, or truncation or a substitution, insertion, inversion, or deletion in a critical residue or critical region.

Amino acids that are essential for function can be identified by methods known in the art, such as site-directed mutagenesis or alanine-scanning mutagenesis (Cunningham et al., Science 244:1081-1085 (1989)), particularly using the results provided in FIG. 2. The latter procedure introduces single alanine mutations at every residue in the molecule. The resulting mutant molecules are then tested for biological activity such as enzyme activity or in assays such as an in vitro proliferative activity. Sites that are critical for binding partner/substrate binding can also be determined by structural analysis such as crystallization, nuclear magnetic resonance or photoaffinity labeling (Smith et al., J. Mol. Biol. 224:899-904 (1992); de Vos et al. Science 255:306-312 (1992)).

The present invention further provides fragments of the enzyme peptides, in addition to proteins and peptides that comprise and consist of such fragments, particularly those comprising the residues identified in FIG. 2. The fragments to which the invention pertains, however, are not to be construed as encompassing fragments that may be disclosed publicly prior to the present invention.

As used herein, a fragment comprises at least 8, 10, 12, 14, 16, or more contiguous amino acid residues from a enzyme peptide. Such fragments can be chosen based on the ability to retain one or more of the biological activities of the enzyme peptide or could be chosen for the ability to perform a function, e.g. bind a substrate or act as an immunogen. Particularly important fragments are biologically active fragments, peptides that are, for example, about 8 or more amino acids in length. Such fragments will typically comprise a domain or motif of the enzyme peptide, e.g., active site, a transmembrane domain or a substrate-binding domain. Further, possible fragments include, but are not limited to, domain or motif containing fragments, soluble peptide fragments, and fragments containing immunogenic structures. Predicted domains and functional sites are readily identifiable by computer programs well known and readily available to those of skill in the art (e.g., PROSITE analysis). The results of one such analysis are provided in FIG. 2.

Polypeptides often contain amino acids other than the 20 amino acids commonly referred to as the 20 naturally occurring amino acids. Further, many amino acids, including the terminal amino acids, may be modified by natural processes, such as processing and other post-translational modifications, or by chemical modification techniques well known in the art. Common modifications that occur naturally in enzyme peptides are described in basic texts, detailed monographs, and the research literature, and they are well known to those of skill in the art (some of these features are identified in FIG. 2).

Known modifications include, but are not limited to, acetylation, acylation, ADP-ribosylation, amidation, covalent attachment of flavin, covalent attachment of a heme moiety, covalent attachment of a nucleotide or nucleotide derivative, covalent attachment of a lipid or lipid derivative, covalent attachment of phosphotidylinositol, cross-linking, cyclization, disulfide bond formation, demethylation, formation of covalent crosslinks, formation of cystine, formation of pyroglutamate, formylation, gamma carboxylation, glycosylation, GPI anchor formation, hydroxylation, iodination, methylation, myristoylation, oxidation, proteolytic processing, phosphorylation, prenylation, racemization, selenoylation, sulfation, transfer-RNA mediated addition of amino acids to proteins such as arginylation, and ubiquitination.

Such modifications are well known to those of skill in the art and have been described in great detail in the scientific literature. Several particularly common modifications, glycosylation, lipid attachment, sulfation, gamma-carboxylation of glutamic acid residues, hydroxylation and ADP-ribosylation, for instance, are described in most basic texts, such as Proteins—Structure and Molecular Properties, 2nd Ed., T. E. Creighton, W. H. Freeman and Company, New York (1993). Many detailed reviews are available on this subject, such as by Wold, F., Posttranslational Covalent Modification of Proteins, B. C. Johnson, Ed., Academic Press, New York 1-12 (1983); Seifter et al. (Meth. Enzymol. 182: 626-646(1990)) and Rattan et al. (Ann. N.Y. Acad. Sci. 663:48-62(1992)).

Accordingly, the enzyme peptides of the present invention also encompass derivatives or analogs in which a substituted amino acid residue is not one encoded by the genetic code, in which a substituent group is included, in which the mature enzyme peptide is fused with another compound, such as a compound to increase the half-life of the enzyme peptide (for example, polyethylene glycol), or in which the additional amino acids are fused to the mature enzyme peptide, such as a leader or secretory sequence or a sequence for purification of the mature enzyme peptide or a pro-protein sequence.

Protein/Peptide Uses

The proteins of the present invention can be used in substantial and specific assays related to the functional information provided in the Figures; to raise antibodies or to elicit another immune response; as a reagent (including the labeled reagent) in assays designed to quantitatively determine levels of the protein (or its binding partner or ligand) in biological fluids; and as markers for tissues in which the corresponding protein is preferentially expressed (either constitutively or at a particular stage of tissue differentiation or development or in a disease state). Where the protein binds or potentially binds to another protein or ligand (such as, for example, in a enzyme-effector protein interaction or enzyme-ligand interaction), the protein can be used to identify the binding partner/ligand so as to develop a system to identify inhibitors of the binding interaction. Any or all of these uses are capable of being developed into reagent grade or kit format for commercialization as commercial products.

Methods for performing the uses listed above are well known to those skilled in the art. References disclosing such methods include “Molecular Cloning: A Laboratory Manual”, 2d ed., Cold Spring Harbor Laboratory Press, Sambrook, J., E. F. Fritsch and T. Maniatis eds., 1989, and “Methods in Enzymology: Guide to Molecular Cloning Techniques”, Academic Press, Berger, S. L. and A. R. Kimmel eds., 1987.

The potential uses of the peptides of the present invention are based primarily on the source of the protein as well as the class/action of the protein. For example, enzymes isolated from humans and their human/mammalian orthologs serve as targets for identifying agents for use in mammalian therapeutic applications, e.g. a human drug, particularly in modulating a biological or pathological response in a cell or tissue that expresses the enzyme. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus. A large percentage of pharmaceutical agents are being developed that modulate the activity of enzyme proteins, particularly members of the metalloprotease subfamily (see Background of the Invention). The structural and functional information provided in the Background and Figures provide specific and substantial uses for the molecules of the present invention, particularly in combination with the expression information provided in FIG. 1. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. Such uses can readily be determined using the information provided herein, that which is known in the art, and routine experimentation.

The proteins of the present invention (including variants and fragments that may have been disclosed prior to the present invention) are useful for biological assays related to enzymes that are related to members of the metalloprotease subfamily. Such assays involve any of the known enzyme functions or activities or properties useful for diagnosis and treatment of enzyme-related conditions that are specific for the subfamily of enzymes that the one of the present invention belongs to, particularly in cells and tissues that express the enzyme. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus.

The proteins of the present invention are also useful in drug screening assays, in cell-based or cell-free systems. Cell-based systems can be native, i.e., cells that normally express the enzyme, as a biopsy or expanded in cell culture. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. In an alternate embodiment, cell-based assays involve recombinant host cells expressing the enzyme protein.

The polypeptides can be used to identify compounds that modulate enzyme activity of the protein in its natural state or an altered form that causes a specific disease or pathology associated with the enzyme. Both the enzymes of the present invention and appropriate variants and fragments can be used in high-throughput screens to assay candidate compounds for the ability to bind to the enzyme. These compounds can be further screened against a functional enzyme to determine the effect of the compound on the enzyme activity. Further, these compounds can be tested in animal or invertebrate systems to determine activity/effectiveness. Compounds can be identified that activate (agonist) or inactivate (antagonist) the enzyme to a desired degree.

Further, the proteins of the present invention can be used to screen a compound for the ability to stimulate or inhibit interaction between the enzyme protein and a molecule that normally interacts with the enzyme protein, e.g. a substrate or a component of the signal pathway that the enzyme protein normally interacts (for example, another enzyme). Such assays typically include the steps of combining the enzyme protein with a candidate compound under conditions that allow the enzyme protein, or fragment, to interact with the target molecule, and to detect the formation of a complex between the protein and the target or to detect the biochemical consequence of the interaction with the enzyme protein and the target, such as any of the associated effects of signal transduction such as protein phosphorylation, cAMP turnover, and adenylate cyclase activation, etc.

Candidate compounds include, for example, 1) peptides such as soluble peptides, including Ig-tailed fusion peptides and members of random peptide libraries (see, e.g., Lam et al., Nature 354:82-84 (1991); Houghten et al., Nature 354:84-86 (1991)) and combinatorial chemistry-derived molecular libraries made of D- and/or L- configuration amino acids; 2) phosphopeptides (e.g., members of random and partially degenerate, directed phosphopeptide libraries, see, e.g., Songyang et al., Cell 72:767-778 (1993)); 3) antibodies (e.g., polyclonal, monoclonal, humanized, anti-idiotypic, chimeric, and single chain antibodies as well as Fab, F(ab′)₂, Fab expression library fragments, and epitope-binding fragments of antibodies); and 4) small organic and inorganic molecules (e.g., molecules obtained from combinatorial and natural product libraries).

One candidate compound is a soluble fragment of the receptor that competes for substrate binding. Other candidate compounds include mutant enzymes or appropriate fragments containing mutations that affect enzyme function and thus compete for substrate. Accordingly, a fragment that competes for substrate, for example with a higher affinity, or a fragment that binds substrate but does not allow release, is encompassed by the invention.

The invention further includes other end point assays to identify compounds that modulate (stimulate or inhibit) enzyme activity. The assays typically involve an assay of events in the signal transduction pathway that indicate enzyme activity. Thus, the phosphorylation of a substrate, activation of a protein, a change in the expression of genes that are up- or down-regulated in response to the enzyme protein dependent signal cascade can be assayed.

Any of the biological or biochemical functions mediated by the enzyme can be used as an endpoint assay. These include all of the biochemical or biochemical/biological events described herein, in the references cited herein, incorporated by reference for these endpoint assay targets, and other functions known to those of ordinary skill in the art or that can be readily identified using the information provided in the Figures, particularly FIG. 2. Specifically, a biological function of a cell or tissues that expresses the enzyme can be assayed. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus.

Binding and/or activating compounds can also be screened by using chimeric enzyme proteins in which the amino terminal extracellular domain, or parts thereof, the entire transmembrane domain or subregions, such as any of the seven transmembrane segments or any of the intracellular or extracellular loops and the carboxy terminal intracellular domain, or parts thereof, can be replaced by heterologous domains or subregions. For example, a substrate-binding region can be used that interacts with a different substrate then that which is recognized by the native enzyme. Accordingly, a different set of signal transduction components is available as an end-point assay for activation. This allows for assays to be performed in other than the specific host cell from which the enzyme is derived.

The proteins of the present invention are also useful in competition binding assays in methods designed to discover compounds that interact with the enzyme (e.g. binding partners and/or ligands). Thus, a compound is exposed to a enzyme polypeptide under conditions that allow the compound to bind or to otherwise interact with the polypeptide. Soluble enzyme polypeptide is also added to the mixture. If the test compound interacts with the soluble enzyme polypeptide, it decreases the amount of complex formed or activity from the enzyme target. This type of assay is particularly useful in cases in which compounds are sought that interact with specific regions of the enzyme. Thus, the soluble polypeptide that competes with the target enzyme region is designed to contain peptide sequences corresponding to the region of interest.

To perform cell free drug screening assays, it is sometimes desirable to immobilize either the enzyme protein, or fragment, or its target molecule to facilitate separation of complexes from uncomplexed forms of one or both of the proteins, as well as to accommodate automation of the assay.

Techniques for immobilizing proteins on matrices can be used in the drug screening assays. In one embodiment, a fusion protein can be provided which adds a domain that allows the protein to be bound to a matrix. For example, glutathione-S-transferase fusion proteins can be adsorbed onto glutathione sepharose beads (Sigma Chemical, St. Louis, Mo.) or glutathione derivatized microtitre plates, which are then combined with the cell lysates (e.g., ³⁵S-labeled) and the candidate compound, and the mixture incubated under conditions conducive to complex formation (e.g., at physiological conditions for salt and pH). Following incubation, the beads are washed to remove any unbound label, and the matrix immobilized and radiolabel determined directly, or in the supernatant after the complexes are dissociated. Alternatively, the complexes can be dissociated from the matrix, separated by SDS-PAGE, and the level of enzyme-binding protein found in the bead fraction quantitated from the gel using standard electrophoretic techniques. For example, either the polypeptide or its target molecule can be immobilized utilizing conjugation of biotin and streptavidin using techniques well known in the art. Alternatively, antibodies reactive with the protein but which do not interfere with binding of the protein to its target molecule can be derivatized to the wells of the plate, and the protein trapped in the wells by antibody conjugation. Preparations of a enzyme-binding protein and a candidate compound are incubated in the enzyme protein-presenting wells and the amount of complex trapped in the well can be quantitated. Methods for detecting such complexes, in addition to those described above for the GST-immobilized complexes, include immunodetection of complexes using antibodies reactive with the enzyme protein target molecule, or which are reactive with enzyme protein and compete with the target molecule, as well as enzyme-linked assays which rely on detecting an enzymatic activity associated with the target molecule.

Agents that modulate one of the enzymes of the present invention can be identified using one or more of the above assays, alone or in combination. It is generally preferable to use a cell-based or cell free system first and then confirm activity in an animal or other model system. Such model systems are well known in the art and can readily be employed in this context.

Modulators of enzyme protein activity identified according to these drug screening assays can be used to treat a subject with a disorder mediated by the enzyme pathway, by treating cells or tissues that express the enzyme. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. These methods of treatment include the steps of administering a modulator of enzyme activity in a pharmaceutical composition to a subject in need of such treatment, the modulator being identified as described herein.

In yet another aspect of the invention, the enzyme proteins can be used as “bait proteins” in a two-hybrid assay or three-hybrid assay (see, e.g., U.S. Pat. No. 5,283,317; Zervos et al. (1993) Cell 72:223-232; Madura et al. (1993) J. Biol. Chem. 268:12046-12054; Bartel et al. (1993) Biotechniques 14:920-924; Iwabuchi et al. (1993) Oncogene 8:1693-1696; and Brent WO94/10300), to identify other proteins, which bind to or interact with the enzyme and are involved in enzyme activity. Such enzyme-binding proteins are also likely to be involved in the propagation of signals by the enzyme proteins or enzyme targets as, for example, downstream elements of a enzyme-mediated signaling pathway. Alternatively, such enzyme-binding proteins are likely to be enzyme inhibitors.

The two-hybrid system is based on the modular nature of most transcription factors, which consist of separable DNA-binding and activation domains. Briefly, the assay utilizes two different DNA constructs. In one construct, the gene that codes for a enzyme protein is fused to a gene encoding the DNA binding domain of a known transcription factor (e.g., GAL-4). In the other construct, a DNA sequence, from a library of DNA sequences, that encodes an unidentified protein (“prey” or “sample”) is fused to a gene that codes for the activation domain of the known transcription factor. If the “bait” and the “prey” proteins are able to interact, in vivo, forming a enzyme-dependent complex, the DNA-binding and activation domains of the transcription factor are brought into close proximity. This proximity allows transcription of a reporter gene (e.g., LacZ) which is operably linked to a transcriptional regulatory site responsive to the transcription factor. Expression of the reporter gene can be detected and cell colonies containing the functional transcription factor can be isolated and used to obtain the cloned gene which encodes the protein which interacts with the enzyme protein.

This invention further pertains to novel agents identified by the above-described screening assays. Accordingly, it is within the scope of this invention to further use an agent identified as described herein in an appropriate animal model. For example, an agent identified as described herein (e.g., a enzyme-modulating agent, an antisense enzyme nucleic acid molecule, a enzyme-specific antibody, or a enzyme-binding partner) can be used in an animal or other model to determine the efficacy, toxicity, or side effects of treatment with such an agent. Alternatively, an agent identified as described herein can be used in an animal or other model to determine the mechanism of action of such an agent. Furthermore, this invention pertains to uses of novel agents identified by the above-described screening assays for treatments as described herein.

The enzyme proteins of the present invention are also useful to provide a target for diagnosing a disease or predisposition to disease mediated by the peptide. Accordingly, the invention provides methods for detecting the presence, or levels of, the protein (or encoding MRNA) in a cell, tissue, or organism. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. The method involves contacting a biological sample with a compound capable of interacting with the enzyme protein such that the interaction can be detected. Such an assay can be provided in a single detection format or a multi-detection format such as an antibody chip array.

One agent for detecting a protein in a sample is an antibody capable of selectively binding to protein. A biological sample includes tissues, cells and biological fluids isolated from a subject, as well as tissues, cells and fluids present within a subject.

The peptides of the present invention also provide targets for diagnosing active protein activity, disease, or predisposition to disease, in a patient having a variant peptide, particularly activities and conditions that are known for other members of the family of proteins to which the present one belongs. Thus, the peptide can be isolated from a biological sample and assayed for the presence of a genetic mutation that results in aberrant peptide. This includes amino acid substitution, deletion, insertion, rearrangement, (as the result of aberrant splicing events), and inappropriate post-translational modification. Analytic methods include altered electrophoretic mobility, altered tryptic peptide digest, altered enzyme activity in cell-based or cell-free assay, alteration in substrate or antibody-binding pattern, altered isoelectric point, direct amino acid sequencing, and any other of the known assay techniques useful for detecting mutations in a protein. Such an assay can be provided in a single detection format or a multi-detection format such as an antibody chip array.

In vitro techniques for detection of peptide include enzyme linked immunosorbent assays (ELISAs), Western blots, immunoprecipitations and immunofluorescence using a detection reagent, such as an antibody or protein binding agent. Alternatively, the peptide can be detected in vivo in a subject by introducing into the subject a labeled anti-peptide antibody or other types of detection agent. For example, the antibody can be labeled with a radioactive marker whose presence and location in a subject can be detected by standard imaging techniques. Particularly useful are methods that detect the allelic variant of a peptide expressed in a subject and methods which detect fragments of a peptide in a sample.

The peptides are also useful in pharmacogenomic analysis. Pharmacogenomics deal with clinically significant hereditary variations in the response to drugs due to altered drug disposition and abnormal action in affected persons. See, e.g., Eichelbaum, M. (Clin. Exp. Pharmacol. Physiol. 23(10-11):983-985 (1996)), and Linder, M. W. (Clin. Chem. 43(2):254-266 (1997)). The clinical outcomes of these variations result in severe toxicity of therapeutic drugs in certain individuals or therapeutic failure of drugs in certain individuals as a result of individual variation in metabolism. Thus, the genotype of the individual can determine the way a therapeutic compound acts on the body or the way the body metabolizes the compound. Further, the activity of drug metabolizing enzymes effects both the intensity and duration of drug action. Thus, the pharmacogenomics of the individual permit the selection of effective compounds and effective dosages of such compounds for prophylactic or therapeutic treatment based on the individual's genotype. The discovery of genetic polymorphisms in some drug metabolizing enzymes has explained why some patients do not obtain the expected drug effects, show an exaggerated drug effect, or experience serious toxicity from standard drug dosages. Polymorphisms can be expressed in the phenotype of the extensive metabolizer and the phenotype of the poor metabolizer. Accordingly, genetic polymorphism may lead to allelic protein variants of the enzyme protein in which one or more of the enzyme functions in one population is different from those in another population. The peptides thus allow a target to ascertain a genetic predisposition that can affect treatment modality. Thus, in a ligand-based treatment, polymorphism may give rise to amino terminal extracellular domains and/or other substrate-binding regions that are more or less active in substrate binding, and enzyme activation. Accordingly, substrate dosage would necessarily be modified to maximize the therapeutic effect within a given population containing a polymorphism. As an alternative to genotyping, specific polymorphic peptides could be identified.

The peptides are also useful for treating a disorder characterized by an absence of, inappropriate, or unwanted expression of the protein. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. Accordingly, methods for treatment include the use of the enzyme protein or fragments.

Antibodies

The invention also provides antibodies that selectively bind to one of the peptides of the present invention, a protein comprising such a peptide, as well as variants and fragments thereof. As used herein, an antibody selectively binds a target peptide when it binds the target peptide and does not significantly bind to unrelated proteins. An antibody is still considered to selectively bind a peptide even if it also binds to other proteins that are not substantially homologous with the target peptide so long as such proteins share homology with a fragment or domain of the peptide target of the antibody. In this case, it would be understood that antibody binding to the peptide is still selective despite some degree of cross-reactivity.

As used herein, an antibody is defined in terms consistent with that recognized within the art: they are multi-subunit proteins produced by a mammalian organism in response to an antigen challenge. The antibodies of the present invention include polyclonal antibodies and monoclonal antibodies, as well as fragments of such antibodies, including, but not limited to, Fab or F(ab′)₂, and Fv fragments.

Many methods are known for generating and/or identifying antibodies to a given target peptide. Several such methods are described by Harlow, Antibodies, Cold Spring Harbor Press, (1989).

In general, to generate antibodies, an isolated peptide is used as an immunogen and is administered to a mammalian organism, such as a rat, rabbit or mouse. The full-length protein, an antigenic peptide fragment or a fusion protein can be used. Particularly important fragments are those covering functional domains, such as the domains identified in FIG. 2, and domain of sequence homology or divergence amongst the family, such as those that can readily be identified using protein alignment methods and as presented in the Figures.

Antibodies are preferably prepared from regions or discrete fragments of the enzyme proteins. Antibodies can be prepared from any region of the peptide as described herein. However, preferred regions will include those involved in function/activity and/or enzyme/binding partner interaction. FIG. 2 can be used to identify particularly important regions while sequence alignment can be used to identify conserved and unique sequence fragments.

An antigenic fragment will typically comprise at least 8 contiguous amino acid residues. The antigenic peptide can comprise, however, at least 10, 12, 14, 16 or more amino acid residues. Such fragments can be selected on a physical property, such as fragments correspond to regions that are located on the surface of the protein, e.g., hydrophilic regions or can be selected based on sequence uniqueness (see FIG. 2).

Detection on an antibody of the present invention can be facilitated by coupling (i.e., physically linking) the antibody to a detectable substance. Examples of detectable substances include various enzymes, prosthetic groups, fluorescent materials, luminescent materials, bioluminescent materials, and radioactive materials. Examples of suitable enzymes include horseradish peroxidase, alkaline phosphatase, β-galactosidase, or acetylcholinesterase; examples of suitable prosthetic group complexes include streptavidin/biotin and avidin/biotin; examples of suitable fluorescent materials include umbelliferone, fluorescein, fluorescein isothiocyanate, rhodamine, dichlorotriazinylamine fluorescein, dansyl chloride or phycoerythrin; an example of a luminescent material includes luminol; examples of bioluminescent materials include luciferase, luciferin, and aequorin, and examples of suitable radioactive material include ¹²⁵I, ¹³¹I, ³⁵S or ³H.

Antibody Uses

The antibodies can be used to isolate one of the proteins of the present invention by standard techniques, such as affinity chromatography or immunoprecipitation. The antibodies can facilitate the purification of the natural protein from cells and recombinantly produced protein expressed in host cells. In addition, such antibodies are useful to detect the presence of one of the proteins of the present invention in cells or tissues to determine the pattern of expression of the protein among various tissues in an organism and over the course of normal development. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus. Further, such antibodies can be used to detect protein in situ, in vitro, or in a cell lysate or supernatant in order to evaluate the abundance and pattern of expression. Also, such antibodies can be used to assess abnormal tissue distribution or abnormal expression during development or progression of a biological condition. Antibody detection of circulating fragments of the full length protein can be used to identify turnover.

Further, the antibodies can be used to assess expression in disease states such as in active stages of the disease or in an individual with a predisposition toward disease related to the protein's function. When a disorder is caused by an inappropriate tissue distribution, developmental expression, level of expression of the protein, or expressed/processed form, the antibody can be prepared against the normal protein. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. If a disorder is characterized by a specific mutation in the protein, antibodies specific for this mutant protein can be used to assay for the presence of the specific mutant protein.

The antibodies can also be used to assess normal and aberrant subcellular localization of cells in the various tissues in an organism. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. The diagnostic uses can be applied, not only in genetic testing, but also in monitoring a treatment modality. Accordingly, where treatment is ultimately aimed at correcting expression level or the presence of aberrant sequence and aberrant tissue distribution or developmental expression, antibodies directed against the protein or relevant fragments can be used to monitor therapeutic efficacy.

Additionally, antibodies are useful in pharmacogenomic analysis. Thus, antibodies prepared against polymorphic proteins can be used to identify individuals that require modified treatment modalities. The antibodies are also useful as diagnostic tools as an immunological marker for aberrant protein analyzed by electrophoretic mobility, isoelectric point, tryptic peptide digest, and other physical assays known to those in the art.

The antibodies are also useful for tissue typing. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. Thus, where a specific protein has been correlated with expression in a specific tissue, antibodies that are specific for this protein can be used to identify a tissue type.

The antibodies are also useful for inhibiting protein function, for example, blocking the binding of the enzyme peptide to a binding partner such as a substrate. These uses can also be applied in a therapeutic context in which treatment involves inhibiting the protein's function. An antibody can be used, for example, to block binding, thus modulating (agonizing or antagonizing) the peptides activity. Antibodies can be prepared against specific fragments containing sites required for function or against intact protein that is associated with a cell or cell membrane. See FIG. 2 for structural information relating to the proteins of the present invention.

The invention also encompasses kits for using antibodies to detect the presence of a protein in a biological sample. The kit can comprise antibodies such as a labeled or labelable antibody and a compound or agent for detecting protein in a biological sample; means for determining the amount of protein in the sample; means for comparing the amount of protein in the sample with a standard; and instructions for use. Such a kit can be supplied to detect a single protein or epitope or can be configured to detect one of a multitude of epitopes, such as in an antibody detection array. Arrays are described in detail below for nuleic acid arrays and similar methods have been developed for antibody arrays.

Nucleic Acid Molecules

The present invention further provides isolated nucleic acid molecules that encode a enzyme peptide or protein of the present invention (cDNA, transcript and genomic sequence). Such nucleic acid molecules will consist of, consist essentially of, or comprise a nucleotide sequence that encodes one of the enzyme peptides of the present invention, an allelic variant thereof, or an ortholog or paralog thereof.

As used herein, an “isolated” nucleic acid molecule is one that is separated from other nucleic acid present in the natural source of the nucleic acid. Preferably, an “isolated” nucleic acid is free of sequences which naturally flank the nucleic acid (i.e., sequences located at the 5′ and 3′ ends of the nucleic acid) in the genomic DNA of the organism from which the nucleic acid is derived. However, there can be some flanking nucleotide sequences, for example up to about 5KB, 4KB, 3KB, 2KB, or 1KB or less, particularly contiguous peptide encoding sequences and peptide encoding sequences within the same gene but separated by introns in the genomic sequence. The important point is that the nucleic acid is isolated from remote and unimportant flanking sequences such that it can be subjected to the specific manipulations described herein such as recombinant expression, preparation of probes and primers, and other uses specific to the nucleic acid sequences.

Moreover, an “isolated” nucleic acid molecule, such as a transcript/cDNA molecule, can be substantially free of other cellular material, or culture medium when produced by recombinant techniques, or chemical precursors or other chemicals when chemically synthesized. However, the nucleic acid molecule can be fused to other coding or regulatory sequences and still be considered isolated.

For example, recombinant DNA molecules contained in a vector are considered isolated. Further examples of isolated DNA molecules include recombinant DNA molecules maintained in heterologous host cells or purified (partially or substantially) DNA molecules in solution. Isolated RNA molecules include in vivo or in vitro RNA transcripts of the isolated DNA molecules of the present invention. Isolated nucleic acid molecules according to the present invention further include such molecules produced synthetically.

Accordingly, the present invention provides nucleic acid molecules that consist of the nucleotide sequence shown in FIG. 1 or 3 (SEQ ID NO:1, transcript sequence and SEQ ID NO:3, genomic sequence), or any nucleic acid molecule that encodes the protein provided in FIG. 2, SEQ ID NO:2. A nucleic acid molecule consists of a nucleotide sequence when the nucleotide sequence is the complete nucleotide sequence of the nucleic acid molecule.

The present invention further provides nucleic acid molecules that consist essentially of the nucleotide sequence shown in FIG. 1 or 3 (SEQ ID NO:1, transcript sequence and SEQ ID NO:3, genomic sequence), or any nucleic acid molecule that encodes the protein provided in FIG. 2, SEQ ID NO:2. A nucleic acid molecule consists essentially of a nucleotide sequence when such a nucleotide sequence is present with only a few additional nucleic acid residues in the final nucleic acid molecule.

The present invention further provides nucleic acid molecules that comprise the nucleotide sequences shown in FIG. 1 or 3 (SEQ ID NO:1, transcript sequence and SEQ ID NO:3, genomic sequence), or any nucleic acid molecule that encodes the protein provided in FIG. 2, SEQ ID NO:2. A nucleic acid molecule comprises a nucleotide sequence when the nucleotide sequence is at least part of the final nucleotide sequence of the nucleic acid molecule. In such a fashion, the nucleic acid molecule can be only the nucleotide sequence or have additional nucleic acid residues, such as nucleic acid residues that are naturally associated with it or heterologous nucleotide sequences. Such a nucleic acid molecule can have a few additional nucleotides or can comprises several hundred or more additional nucleotides. A brief description of how various types of these nucleic acid molecules can be readily made/isolated is provided below.

In FIGS. 1 and 3, both coding and non-coding sequences are provided. Because of the source of the present invention, humans genomic sequence (FIG. 3) and cDNA/transcript sequences (FIG. 1), the nucleic acid molecules in the Figures will contain genomic intronic sequences, 5′ and 3′ non-coding sequences, gene regulatory regions and non-coding intergenic sequences. In general such sequence features are either noted in FIGS. 1 and 3 or can readily be identified using computational tools known in the art. As discussed below, some of the non-coding regions, particularly gene regulatory elements such as promoters, are useful for a variety of purposes, e.g. control of heterologous gene expression, target for identifying gene activity modulating compounds, and are particularly claimed as fragments of the genomic sequence provided herein.

The isolated nucleic acid molecules can encode the mature protein plus additional amino or carboxyl-terminal amino acids, or amino acids interior to the mature peptide (when the mature form has more than one peptide chain, for instance). Such sequences may play a role in processing of a protein from precursor to a mature form, facilitate protein trafficking, prolong or shorten protein half-life or facilitate manipulation of a protein for assay or production, among other things. As generally is the case in situ, the additional amino acids may be processed away from the mature protein by cellular enzymes.

As mentioned above, the isolated nucleic acid molecules include, but are not limited to, the sequence encoding the enzyme peptide alone, the sequence encoding the mature peptide and additional coding sequences, such as a leader or secretory sequence (e.g., a pre-pro or pro-protein sequence), the sequence encoding the mature peptide, with or without the additional coding sequences, plus additional non-coding sequences, for example introns and non-coding 5′ and 3′ sequences such as transcribed but non-translated sequences that play a role in transcription, MRNA processing (including splicing and polyadenylation signals), ribosome binding and stability of MRNA. In addition, the nucleic acid molecule may be fused to a marker sequence encoding, for example, a peptide that facilitates purification.

Isolated nucleic acid molecules can be in the form of RNA, such as MRNA, or in the form DNA, including cDNA and genomic DNA obtained by cloning or produced by chemical synthetic techniques or by a combination thereof. The nucleic acid, especially DNA, can be double-stranded or single-stranded. Single-stranded nucleic acid can be the coding strand (sense strand) or the non-coding strand (anti-sense strand).

The invention further provides nucleic acid molecules that encode fragments of the peptides of the present invention as well as nucleic acid molecules that encode obvious variants of the enzyme proteins of the present invention that are described above. Such nucleic acid molecules may be naturally occurring, such as allelic variants (same locus), paralogs (different locus), and orthologs (different organism), or may be constructed by recombinant DNA methods or by chemical synthesis. Such non-naturally occurring variants may be made by mutagenesis techniques, including those applied to nucleic acid molecules, cells, or organisms. Accordingly, as discussed above, the variants can contain nucleotide substitutions, deletions, inversions and insertions. Variation can occur in either or both the coding and non-coding regions. The variations can produce both conservative and non-conservative amino acid substitutions.

The present invention further provides non-coding fragments of the nucleic acid molecules provided in FIGS. 1 and 3. Preferred non-coding fragments include, but are not limited to, promoter sequences, enhancer sequences, gene modulating sequences and gene termination sequences. Such fragments are useful in controlling heterologous gene expression and in developing screens to identify gene-modulating agents. A promoter can readily be identified as being 5′ to the ATG start site in the genomic sequence provided in FIG. 3.

A fragment comprises a contiguous nucleotide sequence greater than 12 or more nucleotides. Further, a fragment could at least 30, 40, 50, 100, 250 or 500 nucleotides in length. The length of the fragment will be based on its intended use. For example, the fragment can encode epitope bearing regions of the peptide, or can be useful as DNA probes and primers. Such fragments can be isolated using the known nucleotide sequence to synthesize an oligonucleotide probe. A labeled probe can then be used to screen a cDNA library, genomic DNA library, or mRNA to isolate nucleic acid corresponding to the coding region. Further, primers can be used in PCR reactions to clone specific regions of gene.

A probe/primer typically comprises substantially a purified oligonucleotide or oligonucleotide pair. The oligonucleotide typically comprises a region of nucleotide sequence that hybridizes under stringent conditions to at least about 12, 20, 25, 40, 50 or more consecutive nucleotides.

Orthologs, homologs, and allelic variants can be identified using methods well known in the art. As described in the Peptide Section, these variants comprise a nucleotide sequence encoding a peptide that is typically 60-70%, 70-80%, 80-90%, and more typically at least about 90-95% or more homologous to the nucleotide sequence shown in the Figure sheets or a fragment of this sequence. Such nucleic acid molecules can readily be identified as being able to hybridize under moderate to stringent conditions, to the nucleotide sequence shown in the Figure sheets or a fragment of the sequence. Allelic variants can readily be determined by genetic locus of the encoding gene. The gene encoding the novel enzyme of the present invention is located on a genome component that has been mapped to human chromosome 3 (as indicated in FIG. 3), which is supported by multiple lines of evidence, such as STS and BAC map data.

FIG. 3 provides information on SNPs that have been found in the gene encoding the enzyme of the present invention. SNPs were identified at 4 different nucleotide positions. Some of these SNPs that are located outside the ORF and in introns may affect gene transcription.

As used herein, the term “hybridizes under stringent conditions” is intended to describe conditions for hybridization and washing under which nucleotide sequences encoding a peptide at least 60-70% homologous to each other typically remain hybridized to each other. The conditions can be such that sequences at least about 60%, at least about 70%, or at least about 80% or more homologous to each other typically remain hybridized to each other. Such stringent conditions are known to those skilled in the art and can be found in Current Protocols in Molecular Biology, John Wiley & Sons, N.Y. (1989), 6.3.1-6.3.6. One example of stringent hybridization conditions are hybridization in 6×sodium chloride/sodium citrate (SSC) at about 45 C., followed by one or more washes in 0.2×SSC, 0.1% SDS at 50-65 C. Examples of moderate to low stringency hybridization conditions are well known in the art.

Nucleic Acid Molecule Uses

The nucleic acid molecules of the present invention are useful for probes, primers, chemical intermediates, and in biological assays. The nucleic acid molecules are useful as a hybridization probe for messenger RNA, transcript/cDNA and genomic DNA to isolate full-length cDNA and genomic clones encoding the peptide described in FIG. 2 and to isolate cDNA and genomic clones that correspond to variants (alleles, orthologs, etc.) producing the same or related peptides shown in FIG. 2. As illustrated in FIG. 3, SNPs were identified at 4 different nucleotide positions.

The probe can correspond to any sequence along the entire length of the nucleic acid molecules provided in the Figures. Accordingly, it could be derived from 5′ noncoding regions, the coding region, and 3′ noncoding regions. However, as discussed, fragments are not to be construed as encompassing fragments disclosed prior to the present invention.

The nucleic acid molecules are also useful as primers for PCR to amplify any given region of a nucleic acid molecule and are useful to synthesize antisense molecules of desired length and sequence.

The nucleic acid molecules are also useful for constructing recombinant vectors. Such vectors include expression vectors that express a portion of, or all of, the peptide sequences. Vectors also include insertion vectors, used to integrate into another nucleic acid molecule sequence, such as into the cellular genome, to alter in situ expression of a gene and/or gene product. For example, an endogenous coding sequence can be replaced via homologous recombination with all or part of the coding region containing one or more specifically introduced mutations.

The nucleic acid molecules are also useful for expressing antigenic portions of the proteins.

The nucleic acid molecules are also useful as probes for determining the chromosomal positions of the nucleic acid molecules by means of in situ hybridization methods. The gene encoding the novel enzyme of the present invention is located on a genome component that has been mapped to human chromosome 3 (as indicated in FIG. 3), which is supported by multiple lines of evidence, such as STS and BAC map data.

The nucleic acid molecules are also useful in making vectors containing the gene regulatory regions of the nucleic acid molecules of the present invention.

The nucleic acid molecules are also useful for designing ribozymes corresponding to all, or a part, of the mRNA produced from the nucleic acid molecules described herein.

The nucleic acid molecules are also useful for making vectors that express part, or all, of the peptides.

The nucleic acid molecules are also useful for constructing host cells expressing a part, or all, of the nucleic acid molecules and peptides.

The nucleic acid molecules are also useful for constructing transgenic animals expressing all, or a part, of the nucleic acid molecules and peptides.

The nucleic acid molecules are also useful as hybridization probes for determining the presence, level, form and distribution of nucleic acid expression. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus. Accordingly, the probes can be used to detect the presence of, or to determine levels of, a specific nucleic acid molecule in cells, tissues, and in organisms. The nucleic acid whose level is determined can be DNA or RNA. Accordingly, probes corresponding to the peptides described herein can be used to assess expression and/or gene copy number in a given cell, tissue, or organism. These uses are relevant for diagnosis of disorders involving an increase or decrease in enzyme protein expression relative to normal results.

In vitro techniques for detection of mRNA include Northern hybridizations and in situ hybridizations. In vitro techniques for detecting DNA includes Southern hybridizations and in situ hybridization.

Probes can be used as a part of a diagnostic test kit for identifying cells or tissues that express a enzyme protein, such as by measuring a level of a enzyme-encoding nucleic acid in a sample of cells from a subject e.g., MRNA or genomic DNA, or determining if a enzyme gene has been mutated. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus.

Nucleic acid expression assays are useful for drug screening to identify compounds that modulate enzyme nucleic acid expression.

The invention thus provides a method for identifying a compound that can be used to treat a disorder associated with nucleic acid expression of the enzyme gene, particularly biological and pathological processes that are mediated by the enzyme in cells and tissues that express it. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus. The method typically includes assaying the ability of the compound to modulate the expression of the enzyme nucleic acid and thus identifying a compound that can be used to treat a disorder characterized by undesired enzyme nucleic acid expression. The assays can be performed in cell-based and cell-free systems. Cell-based assays include cells naturally expressing the enzyme nucleic acid or recombinant cells genetically engineered to express specific nucleic acid sequences.

The assay for enzyme nucleic acid expression can involve direct assay of nucleic acid levels, such as mRNA levels, or on collateral compounds involved in the signal pathway. Further, the expression of genes that are up- or down-regulated in response to the enzyme protein signal pathway can also be assayed. In this embodiment the regulatory regions of these genes can be operably linked to a reporter gene such as luciferase.

Thus, modulators of enzyme gene expression can be identified in a method wherein a cell is contacted with a candidate compound and the expression of mRNA determined. The level of expression of enzyme RNA in the presence of the candidate compound is compared to the level of expression of enzyme mRNA in the absence of the candidate compound. The candidate compound can then be identified as a modulator of nucleic acid expression based on this comparison and be used, for example to treat a disorder characterized by abeffant nucleic acid expression. When expression of mRNA is statistically significantly greater in the presence of the candidate compound than in its absence, the candidate compound is identified as a stimulator of nucleic acid expression. When nucleic acid expression is statistically significantly less in the presence of the candidate compound than in its absence, the candidate compound is identified as an inhibitor of nucleic acid expression.

The invention further provides methods of treatment, with the nucleic acid as a target, using a compound identified through drug screening as a gene modulator to modulate enzyme nucleic acid expression in cells and tissues that express the enzyme. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus. Modulation includes both up-regulation (i.e. activation or agonization) or down-regulation (suppression or antagonization) or nucleic acid expression.

Alternatively, a modulator for enzyme nucleic acid expression can be a small molecule or drug identified using the screening assays described herein as long as the drug or small molecule inhibits the enzyme nucleic acid expression in the cells and tissues that express the protein. Experimental data as provided in FIG. 1 indicates expression in humans in the lung, amygdala, adrenal gland, hippocampus, and fetus.

The nucleic acid molecules are also useful for monitoring the effectiveness of modulating compounds on the expression or activity of the enzyme gene in clinical trials or in a treatment regimen. Thus, the gene expression pattern can serve as a barometer for the continuing effectiveness of treatment with the compound, particularly with compounds to which a patient can develop resistance. The gene expression pattern can also serve as a marker indicative of a physiological response of the affected cells to the compound. Accordingly, such monitoring would allow either increased administration of the compound or the administration of alternative compounds to which the patient has not become resistant. Similarly, if the level of nucleic acid expression falls below a desirable level, administration of the compound could be commensurately decreased.

The nucleic acid molecules are also useful in diagnostic assays for qualitative changes in enzyme nucleic acid expression, and particularly in qualitative changes that lead to pathology. The nucleic acid molecules can be used to detect mutations in enzyme genes and gene expression products such as mRNA. The nucleic acid molecules can be used as hybridization probes to detect naturally occurring genetic mutations in the enzyme gene and thereby to determine whether a subject with the mutation is at risk for a disorder caused by the mutation. Mutations include deletion, addition, or substitution of one or more nucleotides in the gene, chromosomal rearrangement, such as inversion or transposition, modification of genomic DNA, such as aberrant methylation patterns or changes in gene copy number, such as amplification. Detection of a mutated form of the enzyme gene associated with a dysfunction provides a diagnostic tool for an active disease or susceptibility to disease when the disease results from overexpression, underexpression, or altered expression of a enzyme protein.

Individuals carrying mutations in the enzyme gene can be detected at the nucleic acid level by a variety of techniques. FIG. 3 provides information on SNPs that have been found in the gene encoding the enzyme of the present invention. SNPs were identified at 4 different nucleotide positions. Some of these SNPs that are located outside the ORF and in introns may affect gene transcription. The gene encoding the novel enzyme of the present invention is located on a genome component that has been mapped to human chromosome 3 (as indicated in FIG. 3), which is supported by multiple lines of evidence, such as STS and BAC map data. Genomic DNA can be analyzed directly or can be amplified by using PCR prior to analysis. RNA or cDNA can be used in the same way. In some uses, detection of the mutation involves the use of a probe/primer in a polymerase chain reaction (PCR) (see, e.g. U.S. Pat. Nos. 4,683,195 and 4,683,202), such as anchor PCR or RACE PCR, or, alternatively, in a ligation chain reaction (LCR) (see, e.g., Landegran et al., Science 241:1077-1080 (1988); and Nakazawa et al., PNAS 91:360-364 (1994)), the latter of which can be particularly usefull for detecting point mutations in the gene (see Abravaya et al., Nucleic Acids Res. 23:675-682 (1995)). This method can include the steps of collecting a sample of cells from a patient, isolating nucleic acid (e.g., genomic, MRNA or both) from the cells of the sample, contacting the nucleic acid sample with one or more primers which specifically hybridize to a gene under conditions such that hybridization and amplification of the gene (if present) occurs, and detecting the presence or absence of an amplification product, or detecting the size of the amplification product and comparing the length to a control sample. Deletions and insertions can be detected by a change in size of the amplified product compared to the normal genotype. Point mutations can be identified by hybridizing amplified DNA to normal RNA or antisense DNA sequences.

Alternatively, mutations in a enzyme gene can be directly identified, for example, by alterations in restriction enzyme digestion patterns determined by gel electrophoresis.

Further, sequence-specific ribozymes (U.S. Pat. No. 5,498,531) can be used to score for the presence of specific mutations by development or loss of a ribozyme cleavage site. Perfectly matched sequences can be distinguished from mismatched sequences by nuclease cleavage digestion assays or by differences in melting temperature.

Sequence changes at specific locations can also be assessed by nuclease protection assays such as RNase and S1 protection or the chemical cleavage method. Furthermore, sequence differences between a mutant enzyme gene and a wild-type gene can be determined by direct DNA sequencing. A variety of automated sequencing procedures can be utilized when performing the diagnostic assays (Naeve, C. W., (1995) Biotechniques 19:448), including sequencing by mass spectrometry (see, e.g., PCT International Publication No. WO 94/16101; Cohen et al., Adv. Chromatogr. 36:127-162 (1996); and Griffin et al., Appl. Biochem. Biotechnol. 38:147-159 (1993)).

Other methods for detecting mutations in the gene include methods in which protection from cleavage agents is used to detect mismatched bases in RNA/RNA or RNA/DNA duplexes (Myers et al., Science 230:1242 (1985)); Cotton et al., PNAS 85:4397 (1988); Saleeba et al., Meth. Enzymol. 217:286-295 (1992)), electrophoretic mobility of mutant and wild type nucleic acid is compared (Orita et al., PNAS 86:2766 (1989); Cotton et al, Mutat. Res. 285:125-144 (1993); and Hayashi et al., Genet. Anal. Tech. Appl. 9:73-79 (1992)), and movement of mutant or wild-type fragments in polyacrylamide gels containing a gradient of denaturant is assayed using denaturing gradient gel electrophoresis (Myers et al., Nature 313:495 (1985)). Examples of other techniques for detecting point mutations include selective oligonucleotide hybridization, selective amplification, and selective primer extension.

The nucleic acid molecules are also useful for testing an individual for a genotype that while not necessarily causing the disease, nevertheless affects the treatment modality. Thus, the nucleic acid molecules can be used to study the relationship between an individual's genotype and the individuals response to a compound used for treatment (pharmacogenomic relationship). Accordingly, the nucleic acid molecules described herein can be used to assess the mutation content of the enzyme gene in an individual in order to select an appropriate compound or dosage regimen for treatment. FIG. 3 provides information on SNPs that have been found in the gene encoding the enzyme of the present invention. SNPs were identified at 4 different nucleotide positions. Some of these SNPs that are located outside the ORF and in introns may affect gene transcription.

Thus nucleic acid molecules displaying genetic variations that affect treatment provide a diagnostic target that can be used to tailor treatment in an individual. Accordingly, the production of recombinant cells and animals containing these polymorphisms allow effective clinical design of treatment compounds and dosage regimens.

The nucleic acid molecules are thus useful as antisense constructs to control enzyme gene expression in cells, tissues, and organisms. A DNA antisense nucleic acid molecule is designed to be complementary to a region of the gene involved in transcription, preventing transcription and hence production of enzyme protein. An antisense RNA or DNA nucleic acid molecule would hybridize to the mRNA and thus block translation of mRNA into enzyme protein.

Alternatively, a class of antisense molecules can be used to inactivate MRNA in order to decrease expression of enzyme nucleic acid. Accordingly, these molecules can treat a disorder characterized by abnormal or undesired enzyme nucleic acid expression. This technique involves cleavage by means of ribozymes containing nucleotide sequences complementary to one or more regions in the mRNA that attenuate the ability of the mRNA to be translated. Possible regions include coding regions and particularly coding regions corresponding to the catalytic and other functional activities of the enzyme protein, such as substrate binding.

The nucleic acid molecules also provide vectors for gene therapy in patients containing cells that are aberrant in enzyme gene expression. Thus, recombinant cells, which include the patient's cells that have been engineered ex vivo and returned to the patient, are introduced into an individual where the cells produce the desired enzyme protein to treat the individual.

The invention also encompasses kits for detecting the presence of a enzyme nucleic acid in a biological sample. Experimental data as provided in FIG. 1 indicates that the enzymes of the present invention are expressed in humans in the lung, amygdala, adrenal gland, and fetus, as indicated by virtual northern blot analysis. In addition, PCR-based tissue screening panels indicate expression in the hippocampus. For example, the kit can comprise reagents such as a labeled or labelable nucleic acid or agent capable of detecting enzyme nucleic acid in a biological sample; means for determining the amount of enzyme nucleic acid in the sample; and means for comparing the amount of enzyme nucleic acid in the sample with a standard. The compound or agent can be packaged in a suitable container. The kit can further comprise instructions for using the kit to detect enzyme protein MRNA or DNA.

Nucleic Acid Arrays

The present invention further provides nucleic acid detection kits, such as arrays or microarrays of nucleic acid molecules that are based on the sequence information provided in FIGS. 1 and 3 (SEQ ID NOS:1 and 3).

As used herein “Arrays” or “Microarrays” refers to an array of distinct polynucleotides or oligonucleotides synthesized on a substrate, such as paper, nylon or other type of membrane, filter, chip, glass slide, or any other suitable solid support. In one embodiment, the microarray is prepared and used according to the methods described in U.S. Pat. No. 5,837,832, Chee et al., PCT application W095/11995 (Chee et al.), Lockhart, D. J. et al. (1996; Nat. Biotech. 14: 1675-1680) and Schena, M. et al. (1996; Proc. Natl. Acad. Sci. 93: 10614-10619), all of which are incorporated herein in their entirety by reference. In other embodiments, such arrays are produced by the methods described by Brown et al., U.S. Pat. No. 5,807,522.

The microarray or detection kit is preferably composed of a large number of unique, single-stranded nucleic acid sequences, usually either synthetic antisense oligonucleotides or fragments of cDNAs, fixed to a solid support. The oligonucleotides are preferably about 6-60 nucleotides in length, more preferably 15-30 nucleotides in length, and most preferably about 20-25 nucleotides in length. For a certain type of microarray or detection kit, it may be preferable to use oligonucleotides that are only 7-20 nucleotides in length. The microarray or detection kit may contain oligonucleotides that cover the known 5′, or 3′, sequence, sequential oligonucleotides which cover the full length sequence; or unique oligonucleotides selected from particular areas along the length of the sequence. Polynucleotides used in the microarray or detection kit may be oligonucleotides that are specific to a gene or genes of interest.

In order to produce oligonucleotides to a known sequence for a microarray or detection kit, the gene(s) of interest (or an ORF identified from the contigs of the present invention) is typically examined using a computer algorithm which starts at the 5′ or at the 3′ end of the nucleotide sequence. Typical algorithms will then identify oligomers of defined length that are unique to the gene, have a GC content within a range suitable for hybridization, and lack predicted secondary structure that may interfere with hybridization. In certain situations it may be appropriate to use pairs of oligonucleotides on a microarray or detection kit. The “pairs” will be identical, except for one nucleotide that preferably is located in the center of the sequence. The second oligonucleotide in the pair (mismatched by one) serves as a control. The number of oligonucleotide pairs may range from two to one million. The oligomers are synthesized at designated areas on a substrate using a light-directed chemical process. The substrate may be paper, nylon or other type of membrane, filter, chip, glass slide or any other suitable solid support.

In another aspect, an oligonucleotide may be synthesized on the surface of the substrate by using a chemical coupling procedure and an ink jet application apparatus, as described in PCT application W095/251116 (Baldeschweiler et al.) which is incorporated herein in its entirety by reference. In another aspect, a “gridded” array analogous to a dot (or slot) blot may be used to arrange and link cDNA fragments or oligonucleotides to the surface of a substrate using a vacuum system, thermal, UV, mechanical or chemical bonding procedures. An array, such as those described above, may be produced by hand or by using available devices (slot blot or dot blot apparatus), materials (any suitable solid support), and machines (including robotic instruments), and may contain 8, 24, 96, 384, 1536, 6144 or more oligonucleotides, or any other number between two and one million which lends itself to the efficient use of commercially available instrumentation.

In order to conduct sample analysis using a microarray or detection kit, the RNA or DNA from a biological sample is made into hybridization probes. The mRNA is isolated, and cDNA is produced and used as a template to make antisense RNA (aRNA).

The aRNA is amplified in the presence of fluorescent nucleotides, and labeled probes are incubated with the microarray or detection kit so that the probe sequences hybridize to complementary oligonucleotides of the microarray or detection kit. Incubation conditions are adjusted so that hybridization occurs with precise complementary matches or with various degrees of less complementarity. After removal of nonhybridized probes, a scanner is used to determine the levels and patterns of fluorescence. The scanned images are examined to determine degree of complementarity and the relative abundance of each oligonucleotide sequence on the microarray or detection kit. The biological samples may be obtained from any bodily fluids (such as blood, urine, saliva, phlegm, gastric juices, etc.), cultured cells, biopsies, or other tissue preparations. A detection system may be used to measure the absence, presence, and amount of hybridization for all of the distinct sequences simultaneously. This data may be used for large-scale correlation studies on the sequences, expression patterns, mutations, variants, or polymorphisms among samples.

Using such arrays, the present invention provides methods to identify the expression of the enzyme proteins/peptides of the present invention. In detail, such methods comprise incubating a test sample with one or more nucleic acid molecules and assaying for binding of the nucleic acid molecule with components within the test sample. Such assays will typically involve arrays comprising many genes, at least one of which is a gene of the present invention and or alleles of the enzyme gene of the present invention. FIG. 3 provides information on SNPs that have been found in the gene encoding the enzyme of the present invention. SNPs were identified at 4 different nucleotide positions. Some of these SNPs that are located outside the ORF and in introns may affect gene transcription.

Conditions for incubating a nucleic acid molecule with a test sample vary. Incubation conditions depend on the format employed in the assay, the detection methods employed, and the type and nature of the nucleic acid molecule used in the assay. One skilled in the art will recognize that any one of the commonly available hybridization, amplification or array assay formats can readily be adapted to employ the novel fragments of the Human genome disclosed herein. Examples of such assays can be found in Chard, T, An Introduction to Radioimmunoassay and Related Techniques, Elsevier Science Publishers, Amsterdam, The Netherlands (1986); Bullock, G. R. et al., Techniques in Immunocytochemistry, Academic Press, Orlando, Fla. Vol. 1 (1982), Vol. 2 (1983), Vol. 3 (1985); Tijssen, P., Practice and Theory of Enzyme Immunoassays: Laboratory Techniques in Biochemistry and Molecular Biology, Elsevier Science Publishers, Amsterdam, The Netherlands (1985).

The test samples of the present invention include cells, protein or membrane extracts of cells. The test sample used in the above-described method will vary based on the assay format, nature of the detection method and the tissues, cells or extracts used as the sample to be assayed. Methods for preparing nucleic acid extracts or of cells are well known in the art and can be readily be adapted in order to obtain a sample that is compatible with the system utilized.

In another embodiment of the present invention, kits are provided which contain the necessary reagents to carry out the assays of the present invention.

Specifically, the invention provides a compartmentalized kit to receive, in close confinement, one or more containers which comprises: (a) a first container comprising one of the nucleic acid molecules that can bind to a fragment of the Human genome disclosed herein; and (b) one or more other containers comprising one or more of the following: wash reagents, reagents capable of detecting presence of a bound nucleic acid.

In detail, a compartmentalized kit includes any kit in which reagents are contained in separate containers. Such containers include small glass containers, plastic containers, strips of plastic, glass or paper, or arraying material such as silica. Such containers allows one to efficiently transfer reagents from one compartment to another compartment such that the samples and reagents are not cross-contaminated, and the agents or solutions of each container can be added in a quantitative fashion from one compartment to another. Such containers will include a container which will accept the test sample, a container which contains the nucleic acid probe, containers which contain wash reagents (such as phosphate buffered saline, Tris-buffers, etc.), and containers which contain the reagents used to detect the bound probe. One skilled in the art will readily recognize that the previously unidentified enzyme gene of the present invention can be routinely identified using the sequence information disclosed herein can be readily incorporated into one of the established kit formats which are well known in the art, particularly expression arrays.

Vectors/Host Cells

The invention also provides vectors containing the nucleic acid molecules described herein. The term “vector” refers to a vehicle, preferably a nucleic acid molecule, which can transport the nucleic acid molecules. When the vector is a nucleic acid molecule, the nucleic acid molecules are covalently linked to the vector nucleic acid. With this aspect of the invention, the vector includes a plasmid, single or double stranded phage, a single or double stranded RNA or DNA viral vector, or artificial chromosome, such as a BAC, PAC, YAC, OR MAC.

A vector can be maintained in the host cell as an extrachromosomal element where it replicates and produces additional copies of the nucleic acid molecules. Alternatively, the vector may integrate into the host cell genome and produce additional copies of the nucleic acid molecules when the host cell replicates.

The invention provides vectors for the maintenance (cloning vectors) or vectors for expression (expression vectors) of the nucleic acid molecules. The vectors can function in prokaryotic or eukaryotic cells or in both (shuttle vectors).

Expression vectors contain cis-acting regulatory regions that are operably linked in the vector to the nucleic acid molecules such that transcription of the nucleic acid molecules is allowed in a host cell. The nucleic acid molecules can be introduced into the host cell with a separate nucleic acid molecule capable of affecting transcription. Thus, the second nucleic acid molecule may provide a trans-acting factor interacting with the cis-regulatory control region to allow transcription of the nucleic acid molecules from the vector. Alternatively, a trans-acting factor may be supplied by the host cell. Finally, a trans-acting factor can be produced from the vector itself. It is understood, however, that in some embodiments, transcription and/or translation of the nucleic acid molecules can occur in a cell-free system.

The regulatory sequence to which the nucleic acid molecules described herein can be operably linked include promoters for directing MRNA transcription. These include, but are not limited to, the left promoter from bacteriophage λ, the lac, TRP, and TAC promoters from E. coli, the early and late promoters from SV40, the CMV immediate early promoter, the adenovirus early and late promoters, and retrovirus long-terminal repeats.

In addition to control regions that promote transcription, expression vectors may also include regions that modulate transcription, such as repressor binding sites and enhancers. Examples include the SV40 enhancer, the cytomegalovirus immediate early enhancer, polyoma enhancer, adenovirus enhancers, and retrovirus LTR enhancers.

In addition to containing sites for transcription initiation and control, expression vectors can also contain sequences necessary for transcription termination and, in the transcribed region a ribosome binding site for translation. Other regulatory control elements for expression include initiation and termination codons as well as polyadenylation signals. The person of ordinary skill in the art would be aware of the numerous regulatory sequences that are useful in expression vectors. Such regulatory sequences are described, for example, in Sambrook et al., Molecular Cloning: A Laboratory Manual. 2nd. ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., (1989).

A variety of expression vectors can be used to express a nucleic acid molecule. Such vectors include chromosomal, episomal, and virus-derived vectors, for example vectors derived from bacterial plasmids, from bacteriophage, from yeast episomes, from yeast chromosomal elements, including yeast artificial chromosomes, from viruses such as baculoviruses, papovaviruses such as SV40, Vaccinia viruses, adenoviruses, poxviruses, pseudorabies viruses, and retroviruses. Vectors may also be derived from combinations of these sources such as those derived from plasmid and bacteriophage genetic elements, e.g. cosmids and phagemids. Appropriate cloning and expression vectors for prokaryotic and eukaryotic hosts are described in Sambrook et al., Molecular Cloning: A Laboratory Manual. 2nd. ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., (1989).

The regulatory sequence may provide constitutive expression in one or more host cells (i.e. tissue specific) or may provide for inducible expression in one or more cell types such as by temperature, nutrient additive, or exogenous factor such as a hormone or other ligand. A variety of vectors providing for constitutive and inducible expression in prokaryotic and eukaryotic hosts are well known to those of ordinary skill in the art.

The nucleic acid molecules can be inserted into the vector nucleic acid by well-known methodology. Generally, the DNA sequence that will ultimately be expressed is joined to an expression vector by cleaving the DNA sequence and the expression vector with one or more restriction enzymes and then ligating the fragments together. Procedures for restriction enzyme digestion and ligation are well known to those of ordinary skill in the art.

The vector containing the appropriate nucleic acid molecule can be introduced into an appropriate host cell for propagation or expression using well-known techniques. Bacterial cells include, but are not limited to, E. coli, Streptomyces, and Salmonella typhimurium. Eukaryotic cells include, but are not limited to, yeast, insect cells such as Drosophila, animal cells such as COS and CHO cells, and plant cells.

As described herein, it may be desirable to express the peptide as a fusion protein. Accordingly, the invention provides fusion vectors that allow for the production of the peptides. Fusion vectors can increase the expression of a recombinant protein, increase the solubility of the recombinant protein, and aid in the purification of the protein by acting for example as a ligand for affinity purification. A proteolytic cleavage site may be introduced at the junction of the fusion moiety so that the desired peptide can ultimately be separated from the fusion moiety. Proteolytic enzymes include, but are not limited to, factor Xa, thrombin, and enteroenzyme. Typical fusion expression vectors include pGEX (Smith et al., Gene 67:31-40 (1988)), pMAL (New England Biolabs, Beverly, Mass.) and pRIT5 (Pharmacia, Piscataway, N.J.) which fuse glutathione S-transferase (GST), maltose E binding protein, or protein A, respectively, to the target recombinant protein. Examples of suitable inducible non-fusion E. coli expression vectors include pTrc (Amann et al., Gene 69:301-315 (1988)) and pET 11d (Studier et al., Gene Expression Technology: Methods in Enzymology 185:60-89 (1990)).

Recombinant protein expression can be maximized in host bacteria by providing a genetic background wherein the host cell has an impaired capacity to proteolytically cleave the recombinant protein. (Gottesman, S., Gene Expression Technology: Methods in Enzymology 185, Academic Press, San Diego, Calif. (1990)119-128). Alternatively, the sequence of the nucleic acid molecule of interest can be altered to provide preferential codon usage for a specific host cell, for example E. coli. (Wada et al., Nucleic Acids Res. 20:2111-2118 (1992)).

The nucleic acid molecules can also be expressed by expression vectors that are operative in yeast. Examples of vectors for expression in yeast e.g., S. cerevisiae include pYepSec1 (Baldari, et al., EMBO J. 6:229-234 (1987)), pMFa (Kurjan et al., Cell 30:933-943(1982)), pJRY88 (Schultz et al., Gene 54:113-123 (1987)), and pYES2 (Invitrogen Corporation, San Diego, Calif.).

The nucleic acid molecules can also be expressed in insect cells using, for example, baculovirus expression vectors. Baculovirus vectors available for expression of proteins in cultured insect cells (e.g., Sf 9 cells) include the pAc series (Smith et al., Mol. Cell Biol. 3:2156-2165 (1983)) and the pVL series (Lucklow et al., Virology 170:31-39 (1989)).

In certain embodiments of the invention, the nucleic acid molecules described herein are expressed in mammalian cells using mammalian expression vectors. Examples of mammalian expression vectors include pCDM8 (Seed, B. Nature 329:840(1987)) and pMT2PC (Kaufman et al., EMBO J. 6:187-195 (1987)).

The expression vectors listed herein are provided by way of example only of the well-known vectors available to those of ordinary skill in the art that would be useful to express the nucleic acid molecules. The person of ordinary skill in the art would be aware of other vectors suitable for maintenance propagation or expression of the nucleic acid molecules described herein. These are found for example in Sambrook, J., Fritsh, E. F., and Maniatis, T. Molecular Cloning: A Laboratory Manual. 2nd, ed., Cold Spring Harbor Laboratory, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 1989.

The invention also encompasses vectors in which the nucleic acid sequences described herein are cloned into the vector in reverse orientation, but operably linked to a regulatory sequence that permits transcription of antisense RNA. Thus, an antisense transcript can be produced to all, or to a portion, of the nucleic acid molecule sequences described herein, including both coding and non-coding regions. Expression of this antisense RNA is subject to each of the parameters described above in relation to expression of the sense RNA (regulatory sequences, constitutive or inducible expression, tissue-specific expression).

The invention also relates to recombinant host cells containing the vectors described herein. Host cells therefore include prokaryotic cells, lower eukaryotic cells such as yeast, other eukaryotic cells such as insect cells, and higher eukaryotic cells such as mammalian cells.

The recombinant host cells are prepared by introducing the vector constructs described herein into the cells by techniques readily available to the person of ordinary skill in the art. These include, but are not limited to, calcium phosphate transfection, DEAE-dextran-mediated transfection, cationic lipid-mediated transfection, electroporation, transduction, infection, lipofection, and other techniques such as those found in Sambrook, et al. (Molecular Cloning: A Laboratory Manual. 2nd, ed., Cold Spring Harbor Laboratory, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 1989).

Host cells can contain more than one vector. Thus, different nucleotide sequences can be introduced on different vectors of the same cell. Similarly, the nucleic acid molecules can be introduced either alone or with other nucleic acid molecules that are not related to the nucleic acid molecules such as those providing trans-acting factors for expression vectors. When more than one vector is introduced into a cell, the vectors can be introduced independently, co-introduced or joined to the nucleic acid molecule vector.

In the case of bacteriophage and viral vectors, these can be introduced into cells as packaged or encapsulated virus by standard procedures for infection and transduction. Viral vectors can be replication-competent or replication-defective. In the case in which viral replication is defective, replication will occur in host cells providing functions that complement the defects.

Vectors generally include selectable markers that enable the selection of the subpopulation of cells that contain the recombinant vector constructs. The marker can be contained in the same vector that contains the nucleic acid molecules described herein or may be on a separate vector. Markers include tetracycline or ampicillin-resistance genes for prokaryotic host cells and dihydrofolate reductase or neomycin resistance for eukaryotic host cells. However, any marker that provides selection for a phenotypic trait will be effective.

While the mature proteins can be produced in bacteria, yeast, mammalian cells, and other cells under the control of the appropriate regulatory sequences, cell- free transcription and translation systems can also be used to produce these proteins using RNA derived from the DNA constructs described herein.

Where secretion of the peptide is desired, which is difficult to achieve with multi-transmembrane domain containing proteins such as enzymes, appropriate secretion signals are incorporated into the vector. The signal sequence can be endogenous to the peptides or heterologous to these peptides.

Where the peptide is not secreted into the medium, which is typically the case with enzymes, the protein can be isolated from the host cell by standard disruption procedures, including freeze thaw, sonication, mechanical disruption, use of lysing agents and the like. The peptide can then be recovered and purified by well-known purification methods including ammonium sulfate precipitation, acid extraction, anion or cationic exchange chromatography, phosphocellulose chromatography, hydrophobic-interaction chromatography, affinity chromatography, hydroxylapatite chromatography, lectin chromatography, or high performance liquid chromatography.

It is also understood that depending upon the host cell in recombinant production of the peptides described herein, the peptides can have various glycosylation patterns, depending upon the cell, or maybe non-glycosylated as when produced in bacteria. In addition, the peptides may include an initial modified methionine in some cases as a result of a host-mediated process.

Uses of Vectors and Host Cells

The recombinant host cells expressing the peptides described herein have a variety of uses. First, the cells are useful for producing a enzyme protein or peptide that can be further purified to produce desired amounts of enzyme protein or fragments. Thus, host cells containing expression vectors are useful for peptide production.

Host cells are also useful for conducting cell-based assays involving the enzyme protein or enzyme protein fragments, such as those described above as well as other formats known in the art. Thus, a recombinant host cell expressing a native enzyme protein is useful for assaying compounds that stimulate or inhibit enzyme protein function.

Host cells are also useful for identifying enzyme protein mutants in which these functions are affected. If the mutants naturally occur and give rise to a pathology, host cells containing the mutations are useful to assay compounds that have a desired effect on the mutant enzyme protein (for example, stimulating or inhibiting function) which may not be indicated by their effect on the native enzyme protein.

Genetically engineered host cells can be further used to produce non-human transgenic animals. A transgenic animal is preferably a mammal, for example a rodent, such as a rat or mouse, in which one or more of the cells of the animal include a transgene. A transgene is exogenous DNA which is integrated into the genome of a cell from which a transgenic animal develops and which remains in the genome of the mature animal in one or more cell types or tissues of the transgenic animal. These animals are useful for studying the function of a enzyme protein and identifying and evaluating modulators of enzyme protein activity. Other examples of transgenic animals include non-human primates, sheep, dogs, cows, goats, chickens, and amphibians.

A transgenic animal can be produced by introducing nucleic acid into the male pronuclei of a fertilized oocyte, e.g., by microinjection, retroviral infection, and allowing the oocyte to develop in a pseudopregnant female foster animal. Any of the enzyme protein nucleotide sequences can be introduced as a transgene into the genome of a non-human animal, such as a mouse.

Any of the regulatory or other sequences useful in expression vectors can form part of the transgenic sequence. This includes intronic sequences and polyadenylation signals, if not already included. A tissue-specific regulatory sequence(s) can be operably linked to the transgene to direct expression of the enzyme protein to particular cells.

Methods for generating transgenic animals via embryo manipulation and microinjection, particularly animals such as mice, have become conventional in the art and are described, for example, in U.S. Pat. Nos. 4,736,866 and 4,870,009, both by Leder et al., U.S. Pat. No. 4,873,191 by Wagner et al. and in Hogan, B., Manipulating the Mouse Embryo, (Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y., 1986). Similar methods are used for production of other transgenic animals. A transgenic founder animal can be identified based upon the presence of the transgene in its genome and/or expression of transgenic MRNA in tissues or cells of the animals. A transgenic founder animal can then be used to breed additional animals carrying the transgene. Moreover, transgenic animals carrying a transgene can further be bred to other transgenic animals carrying other transgenes. A transgenic animal also includes animals in which the entire animal or tissues in the animal have been produced using the homologously recombinant host cells described herein.

In another embodiment, transgenic non-human animals can be produced which contain selected systems that allow for regulated expression of the transgene. One example of such a system is the crelloxP recombinase system of bacteriophage P1. For a description of the cre/loxP recombinase system, see, e.g., Lakso et al. PNAS 89:6232-6236 (1992). Another example of a recombinase system is the FLP recombinase system of S. cerevisiae (O'Gorman et al. Science 251:1351-1355 (1991). If a cre/loxP recombinase system is used to regulate expression of the transgene, animals containing transgenes encoding both the Cre recombinase and a selected protein is required. Such animals can be provided through the construction of “double” transgenic animals, e.g., by mating two transgenic animals, one containing a transgene encoding a selected protein and the other containing a transgene encoding a recombinase.

Clones of the non-human transgenic animals described herein can also be produced according to the methods described in Wilmut, I. et al. Nature 385:810-813 (1997) and PCT International Publication Nos. WO 97/07668 and WO 97/07669. In brief, a cell, e.g., a somatic cell, from the transgenic animal can be isolated and induced to exit the growth cycle and enter G_(o) phase. The quiescent cell can then be fused, e.g., through the use of electrical pulses, to an enucleated oocyte from an animal of the same species from which the quiescent cell is isolated. The reconstructed oocyte is then cultured such that it develops to morula or blastocyst and then transferred to pseudopregnant female foster animal. The offspring born of this female foster animal will be a clone of the animal from which the cell, e.g., the somatic cell, is isolated.

Transgenic animals containing recombinant cells that express the peptides described herein are useful to conduct the assays described herein in an in vivo context. Accordingly, the various physiological factors that are present in vivo and that could effect substrate binding, enzyme protein activation, and signal transduction, may not be evident from in vitro cell-free or cell-based assays. Accordingly, it is useful to provide non-human transgenic animals to assay in vivo enzyme protein function, including substrate interaction, the effect of specific mutant enzyme proteins on enzyme protein function and substrate interaction, and the effect of chimeric enzyme proteins. It is also possible to assess the effect of null mutations, that is, mutations that substantially or completely eliminate one or more enzyme protein functions.

All publications and patents mentioned in the above specification are herein incorporated by reference. Various modifications and variations of the described method and system of the invention will be apparent to those skilled in the art without departing from the scope and spirit of the invention. Although the invention has been described in connection with specific preferred embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments. Indeed, various modifications of the above-described modes for carrying out the invention which are obvious to those skilled in the field of molecular biology or related fields are intended to be within the scope of the following claims.

4 1 3377 DNA Human 1 tcgcggcggc cgtgatggct ggtgacggcg gggccgggca ggggaccggg gccgcggccc 60 gggagcgggc cagctgccgg gagccctgaa tcaccgcctg gcccgactcc accatgaacg 120 tcgcgctgca ggagctggga gctggcagca acatggtgga gtacaaacgg gccacgcttc 180 gggatgaaga cgcacccgag acccccgtag agggcggggc ctccccggac gccatggagg 240 tgggcaaggg ggcttcccct ttctcaccag gccccagccc tggcatgacg cctggcacac 300 ccaggagctc tgggctgttc tggagggtca cctgccccca cctccgctcc atctctggcc 360 tctgctctag gactatggtg ggattccaga aggggacaag acagctgtta ggctcacgca 420 cgcagctgga gctggtctta gcaggtgcct ctctactgct ggctgcactg cttctgggct 480 gccttgtggc cctaggggtc cagtaccaca gagacccatc ccacagcacc tgccttacag 540 aggcctgcat tcgagtggct ggaaaaatcc tggagtccct ggaccgaggg gtgagcccct 600 gtgaggactt ttaccagttc tcctgtgggg gctggattcg gaggaacccc ctgcccgatg 660 ggcgttctcg ctggaacacc ttcaacagcc tctgggacca aaaccaggcc atactgaagc 720 acctgcttga aaacaccacc ttcaactcca gcagtgaagc tgagcagaag acacagcgct 780 tctacctatc ttgcctacag gtggagcgca ttgaggagct gggagcccag ccactgagag 840 acctcattga gaagattggt ggttggaaca ttacggggcc ctgggaccag gacaacttta 900 tggaggtgtt gaaggcagta gcagggacct acagggccac cccattcttc accgtctaca 960 tcagtgccga ctctaagagt tccaacagca atgttatcca ggtggaccag tctgggctct 1020 ttctgccctc tcgggattac tacttaaaca gaactgccaa tgagaaagtg ctcactgcct 1080 atctggatta catggaggaa ctggggatgc tgctgggtgg gcggcccacc tccacgaggg 1140 agcagatgca gcaggtgctg gagttggaga tacagctggc caacatcaca gtgccccagg 1200 accagcggcg cgacgaggag aagatctacc acaagatgag catttcggag ctgcaggctc 1260 tggcgccctc catggactgg cttgagttcc tgtctttctt gctgtcacca ttggagttga 1320 gtgactctga gcctgtggtg gtgtatggga tggattattt gcagcaggtg tcagagctca 1380 tcaaccgcac ggaaccaagc atcctgaaca attacctgat ctggaacctg gtgcaaaaga 1440 caacctcaag cctggaccga cgctttgagt ctgcacaaga gaagctgctg gagaccctct 1500 atggcactaa gaagtcctgt gtgccgaggt ggcagacctg catctccaac acggatgacg 1560 cccttggctt tgctttgggg tccctcttcg tgaaggccac gtttgaccgg caaagcaaag 1620 aaattgcaga ggggatgatc agcgaaatcc ggaccgcatt tgaggaggcc ctgggacagc 1680 tggtttggat ggatgagaag acccgccagg cagccaagga gaaagcagat gccatctatg 1740 atatgattgg tttcccagac tttatcctgg agcccaaaga gctggatgat gtttatgacg 1800 ggtacgaaat ttctgaagat tctttcttcc aaaacatgtt gaatttgtac aacttctctg 1860 ccaaggttat ggctgaccag ctccgcaagc ctcccagccg agaccagtgg agcatgaccc 1920 cccagacagt gaatgcctac taccttccaa ctaagaatga gatcgtcttc cccgctggca 1980 tcctgcaggc ccccttctat gcccgcaacc accccaaggc cctgaacttc ggtggcatcg 2040 gtgtggtcat gggccatgag ttgacgcatg cctttgatga ccaagggcgc gagtatgaca 2100 aagaagggaa cctgcggccc tggtggcaga atgagtccct ggcagccttc cggaaccaca 2160 cggcctgcat ggaggaacag tacaatcaat accaggtcaa tggggagagg ctcaacggcc 2220 gccagacgct gggggagaac attgctgaca acggggggct gaaggctgcc tacaatgctt 2280 acaaagcatg gctgagaaag catggggagg agcagcaact gccagccgtg gggctcacca 2340 accaccagct cttcttcgtg ggatttgccc aggtgtggtg ctcggtccgc acaccagaga 2400 gctctcacga ggggctggtg accgaccccc acagccctgc ccgcttccgc gtgctgggca 2460 ctctctccaa ctcccgtgac ttcctgcggc acttcggctg ccctgtcggc tcccccatga 2520 acccagggca gctgtgtgag gtgtggtaga cctggatcag gggagaaatg cccagctgtc 2580 accagacctg gggcagctct cctgacaaag ctgtttgctc ttgggttggg aggaagcaaa 2640 tgcaagctgg gctgggtcta gtccctcccc cccacaggtg acatgagtac agaccctcct 2700 caatcaccac attgtgcctc tgctttgggg gtgcccctgc ctccagcaga gcccccacca 2760 ttcactgtga catctttccg tgtcaccctg cctggaagag gtctgggtgg ggaggccagt 2820 tcccatagga aggagtctgc ctcttctgtc cccaggctca ctcagcctgg cggccatggg 2880 gcctgccgtg cctgccccac tgtgacccac aggcctgggt ggtgtacctc ctggacttct 2940 ccccaggctc actcagtgcg cacttagggg tggactcagc tctgtctggc tcaccctcac 3000 gggctacccc cacctcaccc tgtgctcctt gtgccactgc tcccagtgct gctgctgacc 3060 ttcactgaca gctcctagtg gaagcccaag ggcctctgaa agcctcctgc tgcccactgt 3120 ttccctgggc tgagagggga agtgcatatg tgtagcgggt actggttcct gtgtcttagg 3180 gcacaagcct tagcaaatga ttgattctcc ctggacaaag caggaaagca gatagagcag 3240 ggaaaaggaa gaacagagtt tatttttaca gaaaagaggg tgggagggtg tggtcttggc 3300 ccttatagga ccctgtgcca ataaacagac atgcatccgt caaaaaaaaa aaaaaaaaaa 3360 aaaaaaaaaa aaaaaaa 3377 2 811 PRT Human 2 Met Asn Val Ala Leu Gln Glu Leu Gly Ala Gly Ser Asn Met Val Glu 1 5 10 15 Tyr Lys Arg Ala Thr Leu Arg Asp Glu Asp Ala Pro Glu Thr Pro Val 20 25 30 Glu Gly Gly Ala Ser Pro Asp Ala Met Glu Val Gly Lys Gly Ala Ser 35 40 45 Pro Phe Ser Pro Gly Pro Ser Pro Gly Met Thr Pro Gly Thr Pro Arg 50 55 60 Ser Ser Gly Leu Phe Trp Arg Val Thr Cys Pro His Leu Arg Ser Ile 65 70 75 80 Ser Gly Leu Cys Ser Arg Thr Met Val Gly Phe Gln Lys Gly Thr Arg 85 90 95 Gln Leu Leu Gly Ser Arg Thr Gln Leu Glu Leu Val Leu Ala Gly Ala 100 105 110 Ser Leu Leu Leu Ala Ala Leu Leu Leu Gly Cys Leu Val Ala Leu Gly 115 120 125 Val Gln Tyr His Arg Asp Pro Ser His Ser Thr Cys Leu Thr Glu Ala 130 135 140 Cys Ile Arg Val Ala Gly Lys Ile Leu Glu Ser Leu Asp Arg Gly Val 145 150 155 160 Ser Pro Cys Glu Asp Phe Tyr Gln Phe Ser Cys Gly Gly Trp Ile Arg 165 170 175 Arg Asn Pro Leu Pro Asp Gly Arg Ser Arg Trp Asn Thr Phe Asn Ser 180 185 190 Leu Trp Asp Gln Asn Gln Ala Ile Leu Lys His Leu Leu Glu Asn Thr 195 200 205 Thr Phe Asn Ser Ser Ser Glu Ala Glu Gln Lys Thr Gln Arg Phe Tyr 210 215 220 Leu Ser Cys Leu Gln Val Glu Arg Ile Glu Glu Leu Gly Ala Gln Pro 225 230 235 240 Leu Arg Asp Leu Ile Glu Lys Ile Gly Gly Trp Asn Ile Thr Gly Pro 245 250 255 Trp Asp Gln Asp Asn Phe Met Glu Val Leu Lys Ala Val Ala Gly Thr 260 265 270 Tyr Arg Ala Thr Pro Phe Phe Thr Val Tyr Ile Ser Ala Asp Ser Lys 275 280 285 Ser Ser Asn Ser Asn Val Ile Gln Val Asp Gln Ser Gly Leu Phe Leu 290 295 300 Pro Ser Arg Asp Tyr Tyr Leu Asn Arg Thr Ala Asn Glu Lys Val Leu 305 310 315 320 Thr Ala Tyr Leu Asp Tyr Met Glu Glu Leu Gly Met Leu Leu Gly Gly 325 330 335 Arg Pro Thr Ser Thr Arg Glu Gln Met Gln Gln Val Leu Glu Leu Glu 340 345 350 Ile Gln Leu Ala Asn Ile Thr Val Pro Gln Asp Gln Arg Arg Asp Glu 355 360 365 Glu Lys Ile Tyr His Lys Met Ser Ile Ser Glu Leu Gln Ala Leu Ala 370 375 380 Pro Ser Met Asp Trp Leu Glu Phe Leu Ser Phe Leu Leu Ser Pro Leu 385 390 395 400 Glu Leu Ser Asp Ser Glu Pro Val Val Val Tyr Gly Met Asp Tyr Leu 405 410 415 Gln Gln Val Ser Glu Leu Ile Asn Arg Thr Glu Pro Ser Ile Leu Asn 420 425 430 Asn Tyr Leu Ile Trp Asn Leu Val Gln Lys Thr Thr Ser Ser Leu Asp 435 440 445 Arg Arg Phe Glu Ser Ala Gln Glu Lys Leu Leu Glu Thr Leu Tyr Gly 450 455 460 Thr Lys Lys Ser Cys Val Pro Arg Trp Gln Thr Cys Ile Ser Asn Thr 465 470 475 480 Asp Asp Ala Leu Gly Phe Ala Leu Gly Ser Leu Phe Val Lys Ala Thr 485 490 495 Phe Asp Arg Gln Ser Lys Glu Ile Ala Glu Gly Met Ile Ser Glu Ile 500 505 510 Arg Thr Ala Phe Glu Glu Ala Leu Gly Gln Leu Val Trp Met Asp Glu 515 520 525 Lys Thr Arg Gln Ala Ala Lys Glu Lys Ala Asp Ala Ile Tyr Asp Met 530 535 540 Ile Gly Phe Pro Asp Phe Ile Leu Glu Pro Lys Glu Leu Asp Asp Val 545 550 555 560 Tyr Asp Gly Tyr Glu Ile Ser Glu Asp Ser Phe Phe Gln Asn Met Leu 565 570 575 Asn Leu Tyr Asn Phe Ser Ala Lys Val Met Ala Asp Gln Leu Arg Lys 580 585 590 Pro Pro Ser Arg Asp Gln Trp Ser Met Thr Pro Gln Thr Val Asn Ala 595 600 605 Tyr Tyr Leu Pro Thr Lys Asn Glu Ile Val Phe Pro Ala Gly Ile Leu 610 615 620 Gln Ala Pro Phe Tyr Ala Arg Asn His Pro Lys Ala Leu Asn Phe Gly 625 630 635 640 Gly Ile Gly Val Val Met Gly His Glu Leu Thr His Ala Phe Asp Asp 645 650 655 Gln Gly Arg Glu Tyr Asp Lys Glu Gly Asn Leu Arg Pro Trp Trp Gln 660 665 670 Asn Glu Ser Leu Ala Ala Phe Arg Asn His Thr Ala Cys Met Glu Glu 675 680 685 Gln Tyr Asn Gln Tyr Gln Val Asn Gly Glu Arg Leu Asn Gly Arg Gln 690 695 700 Thr Leu Gly Glu Asn Ile Ala Asp Asn Gly Gly Leu Lys Ala Ala Tyr 705 710 715 720 Asn Ala Tyr Lys Ala Trp Leu Arg Lys His Gly Glu Glu Gln Gln Leu 725 730 735 Pro Ala Val Gly Leu Thr Asn His Gln Leu Phe Phe Val Gly Phe Ala 740 745 750 Gln Val Trp Cys Ser Val Arg Thr Pro Glu Ser Ser His Glu Gly Leu 755 760 765 Val Thr Asp Pro His Ser Pro Ala Arg Phe Arg Val Leu Gly Thr Leu 770 775 780 Ser Asn Ser Arg Asp Phe Leu Arg His Phe Gly Cys Pro Val Gly Ser 785 790 795 800 Pro Met Asn Pro Gly Gln Leu Cys Glu Val Trp 805 810 3 19650 DNA Human misc_feature (1)...(19650) n = A,T,C or G 3 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 60 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 120 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 180 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 240 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 300 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 360 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 420 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 480 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 540 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 600 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 660 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 720 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 780 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 840 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 900 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 960 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 1020 nnnnnncacc ttagacttga caggcctgct tagtcggact ctaaagcacc cctttgcttt 1080 tcgttaaata ttgcttggtg ttagtttttt ttctccttgt aaatctccca aataaaacgg 1140 tttgctttcc ccaagttaga agtgttagca cgtcttttct ttaaatatct gtgcatggct 1200 gtttttttcc ctgccaattt gtcaccatct gtaaccctcc ctttatgaga cgatctgatg 1260 acagcagtta tcttggagag tagaagtgtg gtcttgaagc gccatggaag agtagagtca 1320 gtgtatgctg tgtgtgtgtg gagtgtatgc tccccctgca cttggtgtgt gtacatacag 1380 aaacacagtg tgcgtgtgtg ttggctctgg gtgtgttgtg cgtgtgtaca ctgtgtgtga 1440 gtatgcagtg tgtgtacatt ctgtgggcat ctcgtgtgtg tgtggactgt gtgctgggcg 1500 tcgtgcctgc ccgtgtcctt ggcgccttgg cgtctatgcg ttctctgcac ataggtaggt 1560 accacgtgca caccctgaat gtgagtgaac tgcctgtgtg ctatgtattt gccggctgaa 1620 gaggggctgt gtggactact gggggaagac gttcctcang agggcataat ttctctaaag 1680 tgcttaaagg ggatggagag agcctgaaat ttgggggaag taggccaagg agtattatca 1740 acgtctgggc ctggttgaat ttcattactt ttcctaggaa agtaaattat gggtggcttg 1800 aaggagggtg ctgctgagat ggggggcgga ccatgaagcg tggaggggtc tccggtgttg 1860 ctggagggca gctggagcct gcggagagcc tcggcgcgct cctccctctc ccccaccctc 1920 cccccacccc gggcggggct ccgcgtgggg cggtggactc gggcgggggg gggggcggcc 1980 gcggccgagc gggggtgctg cgcggcggcc gtgatggctg gtgacggcgg ggccgggcag 2040 gggaccgggg ccgcggcccg ggagcgggcc agctgccggg agccctgaat caccgcctgg 2100 cccgactcca ccatgaacgt cgcgctgcag gagctgggag ctggcagcaa cgtgagtggg 2160 ggccccgggc tccacgggag gggactgggt ggagggggac gaggcagagg ggtcggccgc 2220 ggaggggcag gcggtgcccg gctcgcggag gtaaggctgc ctcccgggcc tggtggaggg 2280 gtgatagaga gaccccgggc ccgagagcag ggcaggtggg aagggaaggg ccctcttagc 2340 agggcggagg ggtccgcgag gcagggagca ctggggcagg gtcgtgggca aatagccctc 2400 tctgcctgac ctcggttggc aaccccgact gtctggcaga tggtggagta caaacgggcc 2460 acgcttcggg atgaagacgc acccgagacc cccgtagagg gcggggcctc cccggacgcc 2520 atggaggtgg gcaagggggc ttcccctttc tcaccaggcc ccagccctgg catgacgcct 2580 ggcacaccca ggagctctgg gctgttctgg agggtcatct gcccccacct ccgctccatc 2640 tctggcctct gctctaggac tatggtgagg cgatgctaag ccgtgacgtt gcacaaaaca 2700 gactcaaggc tcaactcact ggctggcctc attgcccccg ggcccagagt taaccctgtg 2760 gctctgaaaa ctgcctgtgg cttcaccctc tggtaatctt ggatccctgc cctgcatctc 2820 agtcactctc tgtccccctg tgttccccag gtgggattcc agaaggggac aagacagctg 2880 ttaggctcac gcacgcagct ggagctggtc ttagcaggtg cctctctact gctggctgca 2940 ctgcttctgg gctgccttgt ggccctaggg gtccagtacc acagaggtag gtgggcccac 3000 actcttcgtc agtattcata actaggggtt ctggaggcct aagggcctct aagattttca 3060 cttgtgggaa ccaagccttc cctgcagaaa agcccccggc tttgctttct cttcccaacc 3120 ttcctgctgt catggccctt gcagagtttg cctcttccag acagacagac tgacagtctc 3180 ctaccctccg gccatgttcc ctaccacaga cccatcccac agcacctgcc ttacagaggc 3240 ctgcattcga gtggctggaa aaatcctgga gtccctggac cgaggggtga gcccctgtga 3300 ggacttttac cagttctcct gtgnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 3360 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 3420 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnc ttagcaaata ggcagtgtcc 3480 catgaatgag gaagtggatg gttctgtgaa cactcccaga gggtggggag gcagagagca 3540 ggggactatt gagaagtgca gatgggtttg atgggggcag aactctgggt acaatggagg 3600 gccgcttctc tgcactctgt ttggagcact gtcgtggtgt ggtagacacc agggagcctg 3660 tactgcttag atatccttgg gtctccatgg acagggagag gaagccacgg cttgctgttt 3720 cagacactct tcctgggtct gcgttagcag gactgctcat tgacaaggca aggagagaaa 3780 ccgagcaagg gccagggact ccccctcagc agttaacgta attgccacct ggatcctgtg 3840 ttctgcccca cagaaaacac caccttcaac tccagcagtg aagctgagca gaagacacag 3900 cgcttctacc tatcttgcct acaggtggag cgcattgagg agctgggagc ccagccactg 3960 agagacctca ttgagaaggt agggccactg agccggttga gggcagggga gcaggagagg 4020 ccttgagaga ggagatggcc caggaacgct ttgggagctc ctgcactaat cattccactt 4080 atggtctcta catagattgg tggttggaac attacggggc cctgggacca ggacaacttt 4140 atggaggtgt tgaaggcagt agcagggacc tacagggcca ccccattctt caccgtctac 4200 atcagtgccg actctaagag ttccaacagc aatgttatcc aggtgatgag ctgggaaagg 4260 gtggggagag acttagggac actttgctga gcccagactt ccctctcctg tgacaggcag 4320 gctgggctga ccccccggcc ccacccctac ccccgctcgg gaattcaggt tcccatggtg 4380 gggaaagcga ggggctcacc tcctttcctt gacattgcag gtggaccagt ctgggctctt 4440 tctgccctct cgggattact acttaaacag aactgccaat gagaaagtaa ggaacatctt 4500 ccgaaccccc atccctaccc ctggctgagc tgggctgatc cctgttgact tttccctttg 4560 ccaagggtca gagcagggaa ggtgagccta tcctgtcacc tagtgaacaa actgcccctc 4620 ctttctttct tcttttcttc ctccctccct ccctttcttc cccttttcct tccttccttc 4680 ctcttattct tctagtaggt ttcatagaca cctactgtgt gccaggtcca gtgggggaat 4740 tctgagatat aagtttnccg agcccattgc cagcaggaga ggggatcctt tagagtcgca 4800 caaacaggtc agtcaagtct aaagacnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 4860 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 4920 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 4980 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 5040 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 5100 nnnnnnnnnn nnnnnnnnnn gcctgnactt gcatgcaccg cggttcggct nctagnagna 5160 tccccccact gcactccagc ctgggtgacg gagagagact ccgactcaaa aaaaaaaaaa 5220 aaaaagaaag aaaaagaaag aaggaacagt ttaaacaaaa gtgttgatga ggctgagcac 5280 agtggctcac acctgtaatc cccgcacttt gggaggctga ggccggcgga tcacttgagg 5340 ttaggagttc aagaccaggc tggcctacaa ggtgaaaacc cgtctctact aaaaatacaa 5400 aaattagcca ggcatggtgg tgtgcacctg taatctcagc tacttgggag gctgaggcaa 5460 agagaatcgc ttgaatccag gaggcagagg ttgcagtgag ctgagatggc accactgcac 5520 tccagcctgg gcaacagaac aagacttcat ctcaaaaaaa aaaaaaaaag tgttgacgag 5580 ggaaaggcta ggtgtgtctg gaccatggca aggggtccac tgtggtaaaa tatagaactc 5640 aaggcagatg agaggctgga gaggtgggca ggaatgggtt atggagggga ccttgaatag 5700 cacactacgg agtttattct gtagctcccg gagagccatt gcatgctcca aagtagggag 5760 ggagcgcant gctttgggaa gtcagtttgt ttggggtgtg aagagtanat gtgagaacnn 5820 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 5880 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 5940 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6000 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6060 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6120 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6180 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6240 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6300 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6360 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6420 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6480 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6540 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6600 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6660 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6720 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6780 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6840 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6900 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 6960 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7020 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7080 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7140 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7200 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7260 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7320 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7380 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7440 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7500 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7560 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7620 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7680 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7740 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7800 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7860 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7920 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 7980 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8040 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8100 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8160 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8220 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8280 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8340 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8400 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8460 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8520 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8580 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8640 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8700 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8760 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8820 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8880 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 8940 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9000 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9060 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9120 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9180 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9240 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9300 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9360 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9420 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9480 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9540 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9600 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9660 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9720 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9780 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9840 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9900 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 9960 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10020 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10080 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10140 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10200 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10260 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10320 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10380 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10440 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10500 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10560 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10620 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10680 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10740 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10800 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10860 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10920 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 10980 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11040 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11100 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11160 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11220 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11280 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11340 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 11400 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnag ttccaggccc acccttgggc 11460 caaacatgtt gaagaccgcc atgctgtagc tagaacttac aaaagatgta agcctgggca 11520 taggtggccg ggtgccgttg tggtcgccac gctatcttgg ggagggatta agggcaagga 11580 aaattcacct tgaggcccaa ggaaggcaca agggttatca cgtgaagccg aggatcacca 11640 tcaccatgca ctaacacgcc ttgggcaagc acgaagcgag gagttgccat ctcaaaacaa 11700 aaacgaaaaa caaacaaaca aaatgctaat caactgtcat tggtaaggct tctggtcaac 11760 agtatgctgt caatagttaa gtttttgggc tgggcgcagt ggctcacgcc tgtaatccca 11820 gcactttggg aggccaaagc gggtagatca cctgaggtca ggagtcgaga ctagcctggc 11880 caacatggcg aaacccagtc tctactaaaa atataaaaat tagccaggcg tggtggtggg 11940 cacttgtaat cccagctact caggaagctg aggcagaact gcttgaactg ggaagtggag 12000 gttgcagtga gccgagatcg tgccattgca ttccagcctg ggcgacaaga gcaaaactcc 12060 atctcaaaaa aaaaaaaaaa aaaaaaagtt gtttttgggg agtcaaaaat gaggccaggc 12120 gcagtggctc atgcctgtaa tcacagcact ttgggaggcc gaggcgggtg gatcacctga 12180 ggtcaggagt tcgtgaccag cttggccaac ctggtgaaac cccgtctcta ctaaaaatac 12240 aaaaattagc cgggcatggt ggcgggcgcc cgtaatctca gctacttggg cggctgaggc 12300 aggagaattg cttcaacccg ggaggcagag gttgcaatga gctgagatcg cgccactgca 12360 ctccagcctt ggcgacagag ggagactcca tgtcaaatta aaaaaaagac cccaggattt 12420 tggactgtgc aggggtcggt gccccaaacc cccacgttgt tcaaggtcaa ctgtacactg 12480 tcatagtcgg gaaaacttca tcactgcagc tgctcctgtt tcttgaaacc tgaagcggga 12540 aactggatcc tgggacacta ctgcccccta tcgcctgttg gtcttcaaag aaataatccc 12600 ttcaattttg caaggcctgt ggtgtcattc ccttttaaca gataaggaaa ccgaggccag 12660 gacgtggtgg aaaataatca aggtcacaca tctatgtgca aaagtggagt aacaacccag 12720 gctcctcatt cccaggtcag tccagtgacc tcaattgaca tgaaatgtgt gaggtccttc 12780 tgtggccctg tggcagggcc tgaagaggac agcgtatgta aatcaagtct tgtgccttca 12840 tgagtgaggc agagtagaaa ataacagtaa ttcactagga ccgaatctgc attgtaaaca 12900 gagaggaaag ggctagtatt tggcagaagg atgtcaagga acattttaga gataagaggt 12960 gacatttggg ttctgaggga tgagtaggag tgtgccaggg tgcaaaggat gaaaagacag 13020 ctctagcagc tggtaagggc taaggggcat ggagaaacag caagactttg gggaactggt 13080 agaattctaa ttctggaaaa tttgaacaag gtaatttttt gtgtgtggtt aaggtattac 13140 atacatacag taaaataaaa tgcaatagtt gctgggtgtg gaggctcacg cctgttaatc 13200 ccagtacttt ggaaggcaga ggcgggtgga tcatctgaag gtcaggagtt cgagaccagc 13260 ctgaccaaca tggtgaaaac ccgtctctac taaaaataca aaaattacct gggtgtggtg 13320 gcaggcgccc gtaatcccag ctacttggga ggctaaggga gaagaatagc ttgaaacccg 13380 gaggtggagg ttgcagtgag ctgagattgc actattgcgc tccagcctgg gtgacaagag 13440 tgaaaagctg tctcaaaata aaataaaaat gtaatagtct aattgatttt tttaaaaaat 13500 gtagacatcc acgtatctac cacctaggta aagatactag agattccagc aacctgggag 13560 gatccctcgt gcccctttca ggtctatatg agcctccacc gttccccagt cccctggaag 13620 gagagggggt gggagaggca acatgaaacc taaaaaccag tgggcttcgc gcctgtaatc 13680 ccagctattg ggttggctga ggcaggagga tcacttgccc aggagttgga ggctgcagtg 13740 agctatgatc gcgccaccgc actccagcct gggcgacaga tcaagacccc atctctaagc 13800 aaacaaacaa ataaacaccc ctcaaaaccc atggcttcag gcctggcgcg gtagcttact 13860 tctgtaatct cagcactttg ggaggccgag gagggcggat cacttgaggt caggagttcc 13920 agaccagact ggccaacatg gcgaaacccc gtctctacta aaaaataaaa aaaaaaaaaa 13980 attggccggg cgcggtggct cacacctgta attaccagca gnnnnnnnnn nnnnnnnnnn 14040 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nttttaaaga atgtagacat ccacgtatct 14100 accacctagg tagagatact agagattcca gcaacctggg aggatccctc gtgcgccttt 14160 caggtctata tgagcctcca ccgttcccca gtcccctgga aggagagggg gtgggagagg 14220 caacatgaaa cctaaaaacc agtgggcttc gcgcctgtaa tcccagctat tgggttggct 14280 gaggcaggag gatcacttgc ccaggagttg gaggctgcag tgagctatga tcgcgccacc 14340 gcactccagc ctgggcgaca gatcaagacc ccatctctaa gcaaacaaac aaataaacac 14400 ccctcaaaac ccatggcttc aggcctggcg cggtagctta cttctgtaat ctcagcactt 14460 tgggaggtca aggtgggcgg atcacttgaa gtaaggagtt caagtaccat cctggctaac 14520 acggtgaaac cccgtctcta ctgaaaagac aaaaaattta gccgggcgtg gtggcgggcg 14580 cctttagtct cagctactcg ggaggctgag gcaggagaat ggcgtgaacc cgggaggtgg 14640 agcttgcagt gagctgagat cgcaccactg cactccagtc tgggtgacag agtgagactc 14700 catctcaaaa aaaaaaaaaa agaagtcaaa gtagtagaaa ctgctgatag actgaatgtg 14760 gggggttagg gagatggagg aagctgagtg actcccaggt ttcttgcatg ggggactgac 14820 tggatataaa attagttgtg ggccgggcac ggtggctcat gcctttaatc ccagcacttt 14880 gggaggccaa agcgggcaga tcacttgagc tcaggagttc aagaccagcc tgggaaacat 14940 ggtgagaccc cttctgtaag ggnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 15000 nnnnnnnnnn nnntgacctt tttttggctc tgntcggtca ctagcangca agttattggg 15060 agtctacaag attctttcac actatgccct caaaattgac tgttcatgta tgtgcagaca 15120 tatagaaaaa caacgggagc caggcgcggt ggctcacgcc ggtaatccca gcactttggg 15180 aggccaaggc gggtgaatca tggggtcagg agttcgagac cagcctggcc aacatggtga 15240 aacctggtct ctactaaaaa tacaaaaaat tagccgggcg tggtggcggg tgtctgtaat 15300 cccagctact tgggaggctg aggcaggaga atcacttgaa cccaggaggc ggaggttgca 15360 gtgagccgag atcgcgccag tgcactccag cctgggcgac agagcaaaac tctgtctcaa 15420 aaaaaaaaaa aaaaaaaaga aaagaaaaga aaaacaactg gatgtaaatt gatgaacaaa 15480 tgaagtagtg ctgctttggg cagtgggatt ataagagtcc tttaaagttg tctatgtgtt 15540 tatgtttaac tatataacta gaagaaatat ttatttatta ggatatgata atggatgtgc 15600 ttaaagtatt acctgtaagg atgtttatgg tttttatggc aatgttgttt ataatagcag 15660 aaaatgagaa caggttaaat gtccaactat agggtaaagg aaaaataaat tgtggttagg 15720 atgggttgtg aggatcctta aatggctgat atatctttca gcaaaaaaag taggttacaa 15780 aaaatatata ccctatacaa cataattcca tattttatat gcatatcagg ggagggaaaa 15840 actctagaag tgggtaatca aaatgttaaa agaacttatc tatgaatgag tgctttataa 15900 ctggtctgtt cttcaattct caattttcca aattttctgt gaatgtcctc ttttcataat 15960 cagataaaaa tcattgcact aggctgggcg tggtggttca cgcttgtaat cccagcactt 16020 tgggaggctg aggcgggtgg atcacgtggt caggagttca agaccaacct ggccaagatg 16080 gtgaaacccc agctctacta aaaatacaaa aattacccgg gcatgatggc gggagcctgt 16140 aatcctagct acttgggagg ctgaggcagg agaatcgctt gaactcggga ggcggaggtt 16200 gcagtgagcc gagattgcgc cactgcactc catcctaggt aacacagcca gactctgtct 16260 caaaaaaaaa aaaaaatcat tgcactatat taaattataa tataatttga tgaacttatt 16320 gtcaattaaa atgtgtactt aattaagaaa aaagccagcc acaatcccag tacctttaca 16380 aatggtgttt ccttctcatc gtctccaggt gctcagccgt atttctttag tctagacgtt 16440 cccatttccc ctgggtggac agggatgggg caccaagggt ggatgggtgg ggcagggatg 16500 cattcagtgc aggggaaggc tgactttacc tcctccctcc caggcagagg ggatgatcag 16560 cgaaatccgg accgcatttg aggaggccct gggacagctg gtttggatgg atgagaagac 16620 ccgccaggca gccaaggaga aagtgagcgg tggctagggt tggggcgcca tcttgaggtg 16680 gggttcaagg atacagtttt gctaggaacc tggggaagga aacaaaccct taacctggtc 16740 tcttcaggca gatgccatct atgatatgat tggtttccca gactttatcc tggagcccaa 16800 agagctggat gatgtttatg acggggtgag tacctacgct catcagtact gaacttcagc 16860 cctgtagagg gcactgttcc ctgggcttag aaattggggc tcaagcactg ggaaagaggt 16920 gcttgtcggt ttcttttaga ggcagatgga ggtaaccagc attgttaaaa tgttggctct 16980 gtgacaggct gcaggccaaa cagcagtgaa atatagtgct aacgagccaa gatttggagt 17040 caagcctaat caaattctgt ttctacctct aactttgtaa ccttaacaaa atctctctag 17100 gccttggttt cattttctgt aaaatggggg tcctactagt gccttcctca tagggttgtt 17160 gtgagataaa tgaatacagt atgtaaaaaa acagcaccca taacataaat ggcctttaaa 17220 tattgccaat tatggtttac tagatatttt acagttgagg aaactgaggt ttggagagat 17280 actaatgagt agccaaactg gcgctattat cttctccaat ggattctctt gctctctgtc 17340 tacttcccaa cttaccacag aacaaannnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17400 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17460 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17520 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17580 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17640 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17700 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17760 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17820 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17880 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 17940 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18000 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18060 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18120 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18180 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18240 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18300 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18360 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18420 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18480 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18540 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18600 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18660 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18720 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn 18780 nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnnnnnn nnnnnagaat caccaacagc 18840 attggatgaa aataaagaag aacaagaggt tcgtttgaga ggaagccggg aaaattctct 18900 cgataaagaa atgcaagtgc gcgcgcggcg caaccactac aatagtgtgt cgtccacccc 18960 agagagtgaa gggggccccc cccgccccaa aggaaagggg tagtgtccac gccgctccac 19020 aaagagagag aaggaaagaa gtagttttcc cccccccggg gagaaacctt ggatggggct 19080 canccccccc tctttttttt tcccgcgaaa acccccccca aaaagttttt tttaaaaaac 19140 aaaaaagggg ggtttggttt tttgggcccc gtggcccctt tggtttaaat tgggagaaag 19200 agggcttaaa ggggggattc aagaaaaaac ccccccccaa ttgccccaaa ttgtaatttc 19260 ctaaccccaa aaggggcccc taaaatttcc ggggaaaccc gtgtgggcaa tggcccatta 19320 gtttacccaa tgcctttatt gacaaaggta gggccccatg gagtcgtccc ctctagccta 19380 gaattcccag tggctcctgc aagggccttg ggacattgat gtagccccaa gggccctgaa 19440 gtctgtggac cagggctggt ggggcactgc tgcccccaag agacgagctc tggttttggt 19500 ggggtgcaaa ggtgagttct cctcagggcg cgagtatgac aaagaaggga actgcggccc 19560 tggtggcaga atgagtccct ggcagccttc cggaaccaca cggcctgcat ggaggaacag 19620 tacaatcaat accaggtcaa tggggagagg 19650 4 765 PRT Human 4 Met Asn Val Ala Leu Gln Glu Leu Gly Ala Gly Ser Asn Met Val Glu 1 5 10 15 Tyr Lys Arg Ala Thr Leu Arg Asp Glu Asp Ala Pro Glu Thr Pro Val 20 25 30 Glu Gly Gly Ala Ser Pro Asp Ala Met Glu Val Gly Phe Gln Lys Gly 35 40 45 Thr Arg Gln Leu Leu Gly Ser Arg Thr Gln Leu Glu Leu Val Leu Ala 50 55 60 Gly Ala Ser Leu Leu Leu Ala Ala Leu Leu Leu Gly Cys Leu Val Ala 65 70 75 80 Leu Gly Val Gln Tyr His Arg Asp Pro Ser His Ser Thr Cys Leu Thr 85 90 95 Glu Ala Cys Ile Arg Val Ala Gly Lys Ile Leu Glu Ser Leu Asp Arg 100 105 110 Gly Val Ser Pro Cys Glu Asp Phe Tyr Gln Phe Ser Cys Gly Gly Trp 115 120 125 Ile Arg Arg Asn Pro Leu Pro Asp Gly Arg Ser Arg Trp Asn Thr Phe 130 135 140 Asn Ser Leu Trp Asp Gln Asn Gln Ala Ile Leu Lys His Leu Leu Glu 145 150 155 160 Asn Thr Thr Phe Asn Ser Ser Ser Glu Ala Glu Gln Lys Thr Gln Arg 165 170 175 Phe Tyr Leu Ser Cys Leu Gln Val Glu Arg Ile Glu Glu Leu Gly Ala 180 185 190 Gln Pro Leu Arg Asp Leu Ile Glu Lys Ile Gly Gly Trp Asn Ile Thr 195 200 205 Gly Pro Trp Asp Gln Asp Asn Phe Met Glu Val Leu Lys Ala Val Ala 210 215 220 Gly Thr Tyr Arg Ala Thr Pro Phe Phe Thr Val Tyr Ile Ser Ala Asp 225 230 235 240 Ser Lys Ser Ser Asn Ser Asn Val Ile Gln Val Asp Gln Ser Gly Leu 245 250 255 Phe Leu Pro Ser Arg Asp Tyr Tyr Leu Asn Arg Thr Ala Asn Glu Lys 260 265 270 Val Leu Thr Ala Tyr Leu Asp Tyr Met Glu Glu Leu Gly Met Leu Leu 275 280 285 Gly Gly Arg Pro Thr Ser Thr Arg Glu Gln Met Gln Gln Val Leu Glu 290 295 300 Leu Glu Ile Gln Leu Ala Asn Ile Thr Val Pro Gln Asp Gln Arg Arg 305 310 315 320 Asp Glu Glu Lys Ile Tyr His Lys Met Ser Ile Ser Glu Leu Gln Ala 325 330 335 Leu Ala Pro Ser Met Asp Trp Leu Glu Phe Leu Ser Phe Leu Leu Ser 340 345 350 Pro Leu Glu Leu Ser Asp Ser Glu Pro Val Val Val Tyr Gly Met Asp 355 360 365 Tyr Leu Gln Gln Val Ser Glu Leu Ile Asn Arg Thr Glu Pro Ser Ile 370 375 380 Leu Asn Asn Tyr Leu Ile Trp Asn Leu Val Gln Lys Thr Thr Ser Ser 385 390 395 400 Leu Asp Arg Arg Phe Glu Ser Ala Gln Glu Lys Leu Leu Glu Thr Leu 405 410 415 Tyr Gly Thr Lys Lys Ser Cys Val Pro Arg Trp Gln Thr Cys Ile Ser 420 425 430 Asn Thr Asp Asp Ala Leu Gly Phe Ala Leu Gly Ser Leu Phe Val Lys 435 440 445 Ala Thr Phe Asp Arg Gln Ser Lys Glu Ile Ala Glu Gly Met Ile Ser 450 455 460 Glu Ile Arg Thr Ala Phe Glu Glu Ala Leu Gly Gln Leu Val Trp Met 465 470 475 480 Asp Glu Lys Thr Arg Gln Ala Ala Lys Glu Lys Ala Asp Ala Ile Tyr 485 490 495 Asp Met Ile Gly Phe Pro Asp Phe Ile Leu Glu Pro Lys Glu Leu Asp 500 505 510 Asp Val Tyr Asp Gly Tyr Glu Ile Ser Glu Asp Ser Phe Phe Gln Asn 515 520 525 Met Leu Asn Leu Tyr Asn Phe Ser Ala Lys Val Met Ala Asp Gln Leu 530 535 540 Arg Lys Pro Pro Ser Arg Asp Gln Trp Ser Met Thr Pro Gln Thr Val 545 550 555 560 Asn Ala Tyr Tyr Leu Pro Thr Lys Asn Glu Ile Val Phe Pro Ala Gly 565 570 575 Ile Leu Gln Ala Pro Phe Tyr Ala Arg Asn His Pro Lys Ala Leu Asn 580 585 590 Phe Gly Gly Ile Gly Val Val Met Gly His Glu Leu Thr His Ala Phe 595 600 605 Asp Asp Gln Gly Arg Glu Tyr Asp Lys Glu Gly Asn Leu Arg Pro Trp 610 615 620 Trp Gln Asn Glu Ser Leu Ala Ala Phe Arg Asn His Thr Ala Cys Met 625 630 635 640 Glu Glu Gln Tyr Asn Gln Tyr Gln Val Asn Gly Glu Arg Leu Asn Gly 645 650 655 Arg Gln Thr Leu Gly Glu Asn Ile Ala Asp Asn Gly Gly Leu Lys Ala 660 665 670 Ala Tyr Asn Ala Tyr Lys Ala Trp Leu Arg Lys His Gly Glu Glu Gln 675 680 685 Gln Leu Pro Ala Val Gly Leu Thr Asn His Gln Leu Phe Phe Val Gly 690 695 700 Phe Ala Gln Val Trp Cys Ser Val Arg Thr Pro Glu Ser Ser His Glu 705 710 715 720 Gly Leu Val Thr Asp Pro His Ser Pro Ala Arg Phe Arg Val Leu Gly 725 730 735 Thr Leu Ser Asn Ser Arg Asp Phe Leu Arg His Phe Gly Cys Pro Val 740 745 750 Gly Ser Pro Met Asn Pro Gly Gln Leu Cys Glu Val Trp 755 760 765 

That which is claimed is:
 1. An isolated nucleic acid molecule consisting of a nucleotide sequence selected from the group consisting of: (a) a nucleotide sequence that encodes a polypeptide comprising the amino acid sequence of SEQ ID NO:2; (b) a nucleotide sequence consisting of SEQ ID NO:1; (c) a nucleotide sequence consisting of SEQ ID NO:3; and (d) a nucleotide sequence that is completely complementary to a nucleotide sequence of (a)-(c).
 2. A nucleic acid vector comprising the nucleic acid molecule of claim
 1. 3. A host cell containing the vector of claim
 2. 4. A process for producing a polypeptide comprising the host cell of claim 3 under conditions sufficient for the production of said polypeptide, and recovering said polypeptide.
 5. An isolated polynucleotide consisting of the nucleotide sequence set forth in SEQ ID NO:1.
 6. An isolated polynucleotide consisting of the nucleotide sequence set forth in SEQ ID NO:3.
 7. A vector according to claim 2, wherein said vector is selected from the group consisting of a plasmid, a virus, and a bacteriophage.
 8. A vector according to claim 2, wherein said isolated nucleic acid molecule is inserted into said vector in proper orientation and correct reading frame such that a polypeptide comprising SEQ ID NO:2 may be expressed by a cell transformed with said vector.
 9. A vector according to claim 8, wherein said isolated nucleic acid molecule is operatively linked to a promoter sequence.
 10. An isolated nucleic acid molecule comprising a nucleotide sequence selected from the group consisting of: (a) a nucleotide sequence that encodes SEQ ID NO:2; (b) SEQ ID NO:1; (c) residues 114-2546 of SEQ ID NO:1; (d) SEQ ID NO:3; and (e) a nucleotide sequence that is completely complementary to a nucleotide sequence of (a)-(d).
 11. A nucleic acid vector comprising the nucleic acid molecule of claim
 10. 12. A host cell containing the vector of claim
 11. 13. A process for producing a polypeptide comprising culturing the host cell of claim 12 under conditions sufficient for the production of said polypeptide, and recovering said polypeptide.
 14. A vector according to claim 11, wherein said vector is selected from the group consisting of a plasmid, a virus, and a bacteriophage.
 15. A vector according to claim 11, wherein said isolated nucleic acid molecule is inserted into said vector in proper orientation and correct reading frame such that a polypeptide comprising SEQ ID NO:2 maybe expressed by a cell transformed with said vector.
 16. A vector according to claim 15, wherein said isolated nucleic acid molecule is operatively linked to a promoter sequence.
 17. An isolated nucleic acid molecule consisting of a nucleotide sequence selected from the group consisting of: (a) a nucleotide sequence that encodes an amino acid sequence having at least 99% sequence identity to SEQ ID NO:2 and having human zinc metalloprotease activity; (b) a nucleotide sequence having at least 99% sequence identity to SEQ ID NO:1 wherein said sequence encodes for a human zinc metalloprotease; and (c) a nucleotide sequence that is completely complementary to a nucleotide sequence of (a)-(b).
 18. A nucleic acid vector comprising the nucleic acid molecule of claim
 17. 19. A host cell containing the vector of claim
 18. 20. A process for producing a polypeptide comprising culturing the host cell of claim 19 under conditions sufficient for the production of said polypeptide, and recovering said polypeptide.
 21. A vector according to claim 18, wherein said vector is selected from the group consisting of a plasmid, a virus, and a bacteriophage.
 22. A vector according to claim 18, wherein said isolated nucleic acid molecule is inserted into said vector in proper orientation and correct reading frame such that a polypeptide having at least 99% sequence identity to SEQ ID NO:2 may be expressed by a cell transformed with said vector.
 23. A vector according to claim 22, wherein said isolated nucleic acid molecule is operatively linked to a promoter sequence. 